Quarterly List of New Technical and Industrial Books

Chosen and annotated for general libraries by the Applied Science Reference Department, Pratt Institute Free Library, Brooklyn, N. Y.
Nos. 2-5 FEBRUARY, 1918

Drawing and design for craftsmen. R. S. Bowers. McKay. 407p. $2.00. (The handcraft series.)

A comprehensive book in which the learner is gradually taken through the elements of drawing to more advanced work, the whole tendency being towards the applications of art to decoration and industrial design.

The book would be suitable for self instruction, would also offer suggestions to teachers of drawing and design.

Furniture making; designs, working drawings, and complete details of 170 pieces of furniture, with practical information on their construction. R. S. Bowers, John Bovington, and other designer-craftsmen; with 1,082 illustrations. McKay. 407p. $2.00. (The handicraft series.)

A book for the amateur craftsman who has already mastered the elementary operations of woodworking. Describes and illustrates in detail many pieces of furniture, with drawings, dimensions, and directions for preparing large working drawings. Presupposes a good amateur knowledge of cabinet work.

Electrical equipment: its selection and arrangement with special reference to factories, shops and industrial plants. H. W. Brown. McGraw. 220p. $2.00 net.

The general employment of electricity for power and lighting purposes in industrial establishments creates a need for specific data on the characteristics, connections, costs, etc., of electric machinery and appliances, the most suitable systems for particular cases, and other related matters heretofore scattered in books and periodicals and not readily to be found.

In this book the author presents these data which he has worked out or compiled for his classes of non-electrical engineering students who required a short course in electrical engineering rendered necessary by the conditions of modern factory and shop practice.

The book is valuable as a text-book or as a reference for engineers planning or operating electrical equipment in industrial plants, although in some cases collateral references will be necessary for greater detail.

Author is connected with the engineering department of Cornell University.

Another good recent book: Clewell’s “Machine shop electricity,” McGraw, 1916, $3.00 net, treats in much detail of electrical installations in machine shops for lighting, power, communication, heating, etc.

Home crafts of today and yesterday. Florence Buchanan. Harper. 170p. $1.00 (Harper’s home economics.)

A book about many of the things which a woman could do at home and would like to know how to do; arrangement of the sewing-room; buying household linens; making, marking and mending linens; macramé; caning chairs; basketry; dyeing; rug making; weaving; decorating with brush and paint, etc.

Author is instructor in handwork, Pratt Institute.

Practical wireless telegraphy; a complete text-book for students of radio communication. E. E. Bucher. Wireless Press. 322p. $1.50.

Text-book used in the instruction classes of the Marconi Wireless Telegraph Company of America.

Treats generally of the principles of electricity, of electrical generators, motors and storage batteries, and describes the construction and operation of the apparatus employed in wireless telegraphy, the standard Marconi sets being explained and illustrated in detail. The book is fully illustrated with half-tones and diagrams, including many wiring diagrams, and is provided with examination questions.

Author is instructing engineer, Marconi Wireless Telegraph Company of America.

Practical motor boat handling, seamanship and piloting; a handbook containing information which every motor boatman should know; especially prepared for the man who takes pride in handling his own boat and getting the greatest enjoyment out of cruising; adapted for the yachtsman interested in fitting himself to be of service to his government in time of war. C. F. Chapman. Motor Boating. 144p. $1.00.

Useful information about handling and navigating motor boats: laws and regulations, compass errors, nautical instruments, signals, etc. The book is not concerned with motor boat engines or their operation.

Author is editor of Motor Boating.

Treatise on milling and milling machines. Cincinnati milling machine company. 409p. $1.50 net.

Trade publication, but one of best books on the subject. Describes milling machines and the methods of performing the many operations in which these machine tools are employed, with simple explanations of the mathematics necessary for the various calculations, and many illustrations.

Reference libraries may be able to obtain copies gratis.

Arithmetic for engineers. C. B. Clapham. Lond., Chapman, and N. Y., Dutton. 5s 6d net. American price, $3.00 net. (The directly-useful technical series.)

Elementary mathematics for the man with little previous training. Includes arithmetic, algebra, logarithms, mensuration, and use of the slide rule with engineering applications by means of practical problems and illustrations. A good book of the elementary type.

Author is lecturer in engineering and elementary mathematics, University of London.

Home handy book; a compendium of useful things to do around the house and how to keep it in order. A. F. Collins. Appleton. 165p. $1.10.

Tells the amateur how to perform odd jobs; repairing locks, electric bell circuits, plumbing, furniture repairing, paper-hanging, etc. Illustrated.

Inventing for boys. A. F. Collins. Stokes. $1.35 net.

Tells in a simple manner how to experiment with machinery, electricity, etc., how to make models, how to obtain a patent, and about patent office procedure, things to invent, etc. The technical terms used in the book are explained.

Interior wiring and systems for electric light and power service; a manual for electric workers, constructors, architects and schools. A. L. Cook. Wiley. 425p. $2.00 net.

Valuable to electrical workers occupied with installing electric light and power in industrial works, office buildings, or dwellings; to contractors and architects concerned with planning and calculating light and power systems and as a reference for engineering students.

Part 1. Electric light systems; the various kinds of lamps, and their accessories; systems best suited to particular purposes; methods of calculating illumination with illustrative examples.

Part 2. Electric power systems; types of motors and their performance; selection of motors for industrial purposes, their starting devices, controllers, etc.

Part 3. Detailed methods of calculating interior wiring for light and power with examples worked out for all the usual systems; plans and diagrams of wiring systems which have been actually installed in buildings.

Pocket-size, flexible binding.

Author is head of department of applied electricity, Pratt Institute.

Electrical machinery; principles, operation and management. Terrell Croft. McGraw. 318p. $2.00.

An attempt to convey to the average electrical worker a knowledge of the principles, construction, characteristics, management, and operation of electric generators and motors. Particular attention is given to the installation and operation of electrical machinery and the location and correction of troubles. The treatment is plain, without difficult mathematics.

The same author’s “American electricians’ handbook,” McGraw, 1913, $3.00, is one of the most useful reference books for practical electrical workers.

Practical electric illumination. Terrell Croft. McGraw. $2.00.

Treats in a plain manner, as little technical as possible, of the principles of illumination, of reflectors and electric lamps, and of their practical applications in interior and exterior lighting.

Practical electricity. Terrell Croft. McGraw. 646p. $2.50.

A simplified presentation of the elements of theory and practice of electric and magnetic phenomena, addressed to the reader with little technical or mathematical preparation. One of the best books of its class. Suitable for home study or as an elementary text-book. Fully illustrated.

Wiring for light and power; a detailed and fully illustrated commentary on the more important portions of the National Electric Code. Terrell Croft. McGraw. 426p. $2.00.

A book for electrical workers concerned with the installation of electric wiring and apparatus for any purpose.

The “National electric code” which this book explains and illustrates, is a set of rules prepared by the National Board of Fire Underwriters for the purpose of insuring safe electrical installation. The aim of the author of the present book is to make plain just how the work should be performed to meet the requirements of the “Code.” The “Code” itself may be had gratis from the National Board of Fire Underwriters, 76 William St., New York City.

Drawing for builders. R. B. Dale. Wiley. 166p. $1.50 net. (Wiley technical series for vocational and industrial schools.)

Primarily a school text book, but would be suitable for home study by apprentices or carpenters who lack a knowledge of drawing.

The same author’s “Arithmetic for carpenters and builders” is an excellent book for the same type of reader.

Author is in charge of the engineering extension work of the Iowa State College.

Practical marine engineering for marine engineers and students; with aids for applicants for marine engineers’ license. W. F. Durand. 4th ed. rev. and enl. by C. W. Dyson. Marine Engineering. 982p. $6.00.

Excellent book for the engineer or novice who may be preparing for examination for a marine engineer’s license. The treatment is as plain and non-mathematical as possible. Examination questions accompany each chapter, and a section is devoted to computations for engineers, with worked-out examples and problems with answers.

The greatly increased interest in marine engineering renders this new edition of the best American practical book on the subject particularly timely.

Farm concrete. K. J. T. Elkblaw. Macmillan. 295p. $1.60.

Indicates in a practical manner what is good practice in preparing, testing, and applying concrete to its many uses in farm structures: foundations and cellars, pavements, floors, sidewalks, steps, building blocks, fence posts, tanks, troughs, cisterns, silos, residences, etc.

Addressed to farmers, students of agriculture, and concrete contractors.

Learning to fly in the U.S. Army; a manual of aviation practice. E. N. Fales. McGraw. 180p. $1.50.

Elementary text-book, without mathematics, for non-technically trained men who may be called into the aviation service of the army. Describes the types of military airplanes, principles of flight, flying the airplane, cross-country flying, rigging of airplanes, materials of construction, erecting, handling and inspecting airplanes.

Author occupies the chair of aeronautics, University of Illinois.

Army and navy information; uniforms, organization, arms and equipment of the warring powers. D. C. Falls. Dutton. 191p. $1.00.

Convenient reference book answering questions concerning organization, draft, uniforms, equipment, insignia, pay, and other matters of interest relating to the United States Army and Navy, also less detailed information concerning the forces of other nations engaged in the present war.

Illustrated with six plates in color and many line drawings.

Retail buying; modern principles and practice. C. C. Field. 220p. $1.25. (Harper’s retail business, series.)

Valuable information and advice for those whose business it is to buy stocks of merchandise to be sold at retail in large or average shops. Presents the best present-day methods as practiced in representative American retailing houses. Instructive reading for any one connected with retail buying or selling.

Author writes from experience as buyer for large department stores and as instructor in merchandising, University of Wisconsin.

Practical road building. C. E. Foote. McKay. 295p. $1.25.

Plainly stated information about the laying-out, financing and building of all types of country highway roads. Valuable to road officials, engineers, and lay readers interested in the building of good roads.

The book has the endorsement of the National Highways Association and the American Automobile Association.

Junior Plattsburg manual. E. B. Garey and O. O. Ellis. Century. 299p. $1.50.

Elementary manual of military drill, physical training, marching and camping, first aid to the wounded, signals and codes, etc.; suitable for use in schools. Fully illustrated.

Both authors are captains in the United States Army.

Elements of refrigeration; a text-book for students, engineers, and warehousemen. A. M. Greene, Jr. Wiley. 472p. $4.00.

Treats of the design, construction and operation of refrigeration apparatus and of its applications in ice making, cold storage, breweries, dairies, rinks, auditoriums, etc. Considers the subject from its theoretical and practical sides.

Author is professor of mechanical engineering, Rensselaer Polytechnic Institute.

Another good book, less theoretical and mathematical, is Cosgrove’s Sanitary refrigeration and ice making, published by the Standard Sanitary Mfg. Co., 1914. $3.50.

Carpentry. I. S. Griffiths. Manual Arts Press. 188p. $1.00 net.

Good elementary book on wooden house building for carpentry apprentices and as a text-book for trade and vocational schools. Well illustrated with line drawings and half tones. Added chapters contain data on estimating and miscellaneous information relating to the trade.

Author is an experienced carpenter and is chairman of the Manual Arts department, University of Missouri. He has written several excellent elementary books on woodworking, which are recommended.

Handicrafts for the handicapped. H. J. Hall and M. M. C. Buck. Moffat. 170p. $1.25 net.

Describes manual work which partially disabled persons may learn to perform. The operations include: basketry, chair seating, netting, hand-loom weaving, bookbinding, cement working, pottery making, and light blacksmithing.

Suggestive book for teachers as well as for the workers themselves.

A portion of the matter appeared originally in the Craftsman.

Secrets of the submarine. M. F. Hay. Dodd. 229p. $1.25.

Plain, non-technical presentation of facts concerning the design, construction, machinery, armament, projectiles, safety devices and operation of submarine warships and of their value as fighting machines.

Authentic, up-to-date information from a writer who for seventeen years has been occupied with the design and construction of submarine ships.

Everyman’s chemistry; the chemist’s point of view and his recent work told for the layman. Ellwood Hendrick. Harper. 374p. $2.00. (Harper’s modern science series.)

Entertainingly written book which explains in an interesting, often amusing manner, a good deal about general chemistry and the applications of chemistry in the industries.

A good book for the layman who is interested in knowing something of the part in the world’s work which the chemist of to-day is performing.

Printing; a text-book for printers’ apprentices, continuation classes, and for general use in schools. F. S. Henry. Wiley. 318p. $1.25. (Wiley technical series.)

Good elementary text-book covering the various processes involved in the art of printing from type. The book would also interest many practical printers.

Author is instructor in printing at Philadelphia Trades School.

The submarine torpedo boat: its characteristics and modern developments. Allen Hoar. Van Nostrand. 225p. $2.00 net.

A reliable, readable, well-illustrated book on the submarine. Discusses all types of submarine boats; their design, construction and operation, and considers their future possibilities.

Navigation. Harold Jacoby. Macmillan. 330p. $2.25.

A concisely written book for the beginner in the study of navigation, designed to be comprehensive enough to teach the student how to navigate a ship. The necessary tables are included. Suitable for home study.

Author is professor of astronomy, Columbia University.

Text-book of land drainage. J. A. Jeffery. Macmillan. $1.25 net. (Rural text-book series.)

Primarily a text-book for agricultural schools, but the author states that he also prepared the book with special regard to the requirements of the practical farmer.

Departmental store merchandise manuals; edited by B. E. Kennard, director of department store courses, New York University, and chairman of Committee on merchandise courses for New York city public schools. Ronald. $1.25 each.

A series of books for retail salespeople in department stores, each department being considered separately. The object of the author is to give in a plain, simple manner authoritative information concerning the sources of raw materials, methods of manufacture, qualities, and other details of the goods which are to be sold. The following volumes have appeared:

Jewelry department. B. E. Kennard.

Cotton and linen department. E. B. Thompson.

Notions department. M. A. Souder.

Leather goods department. M. A. Lehmann.

Stationery department. M. A. Lehmann.

The books average about 160 pages.

Book of the machine gun. F. V. Longstaff and A. H. Atteridge. Rees. 337p. 8s. 6d. (Dodd. $2.50.)

Describes and illustrates in detail all types of machine guns.

Senior author is major in the British Army.

Paper; its history, sources, and manufacture. H. A. Maddox. Pitman. 159p. 85c. (Pitman’s common commodities of commerce.)

Brief, semi-technical treatise which would be instructive to the general reader interested in knowing how paper is made.

The Ford car and truck and tractor attachments; their construction, care and operation. H. P. Manly. Drake. 256p. $1.00.

Pocket-size book with plainly stated information about the engine, transmission system, control, driving, repairing, lighting, and starting of the Ford automobile, with a chapter on the attachments employed in adapting it for truck and tractor service.

A short account of explosives. Arthur Marshall. Blakiston. 96p. $1.50.

Brief authoritative account of the manufacture, properties, uses, and handling of explosives. A chapter on fireworks is included. Useful book for those concerned with the making or handling of explosives, and not too technical for the general reader.

The same author’s “Explosives; their manufacture, properties, tests, and history” (2d ed., 2v., Blakiston, 1917, $16.00) is the best recent book in English on the subject, but is for the chemist and manufacturer.

Wheat and its products: a brief account of the cereal, where it is grown, and the modern method of producing wheaten flour. Andrew Millar. Pitman. 134p. 85c. (Pitman’s common commodities of commerce.)

For the general reader. Tells briefly of the sources of the wheat supply, the storage and handling of wheat, and the making of flour.

The eyes of the Army and Navy; practical aviation. A. H. Munday. Harper. 227p. $1.50.

Brief, practical, instruction book for beginners in aviation; based on the author’s experience.

Author is flight lieutenant, Royal British Navy.

Machinery’s encyclopedia; a work of reference covering practical mathematics and mechanics, machine design, machine construction and operation, electrical, gas, hydraulic, and steam power machinery, metallurgy, and kindred subjects in the engineering field. Erik Oberg and F. D. Jones, eds. 7 vols. 3558p. Size 11x8 in. Industrial Press. Subscription price, $36.00.

Important reference work giving authoritative information on a wide range of subjects in the mechanical engineering field. Over seventy collaborators have contributed signed articles, which are well illustrated, mostly with line drawings. The matter is arranged in an alphabetical order, and for greater convenience a good topical index to all the matter is provided.

The work is worth consideration by libraries in communities where many machine-shop mechanicians, power plant engineers, foundrymen, etc., are employed.

Aviation engines; design construction, operation and repair; a complete, practical treatise outlining clearly the elements of internal combustion engineering with special reference to the design, construction, operation, and repair of airplane power plants; also the auxiliary engine systems, such as lubrication, carburetion, ignition and cooling. It includes complete instructions for engine repairing and systematic location of troubles, tool equipment and use of tools, also outlines the latest mechanical processes. V. W. Pagé. Henley. 589p. $3.00.

An instruction book for men entering the Army aviation service, for mechanicians engaged in aviation engine repair work, and for students of aviation.

The treatment is plain and practical with little theory and mathematics. A small amount of matter was suppressed by Government censorship.

Author is lieutenant in aviation service and assistant engineering officer, Signal Corps Aviation School, Mineola. He has written several good books on the automobile.

How to run an automobile: a concise, practical treatise written in simple language explaining the functions of modern gasoline automobile parts with complete instructions for driving and care. V. W. Pagé. Henley. $1.00.

Contains plain directions for running and caring for an automobile, rules of the road, and other things necessary for the automobile operator to know.

Storage batteries simplified: operating principles, care and industrial applications; a complete, non-technical but authoritative treatise discussing the development of the modern storage battery, outlining the basic operation of the leading types, also the methods of construction, charging, maintenance and repair. V. W. Pagé. Henley. 208p. $1.50.

A plainly written book understandable by the average reader. Describes and illustrates the applications of storage batteries to automobile ignition, starting and lighting, motor boat and submarine boat engineering and other purposes.

Office organization and management. C. C. Parsons. La Salle Extension University. 313p. $2.50.

One of a good series of correspondence school text-books. Considers all factors entering into office organization and management, with special emphasis on the human element. Chapters are devoted to office lay-out, selection and training of employees, rules and regulations, discipline, promotions, encouragement of savings, pension systems, discipline, welfare work, mechanical equipment of offices, records, mailing department, etc. Test questions accompany each of the 29 chapters and many blank forms are provided.

Author writes from personal business experience and as lecturer in business administration, University of Michigan.

A German-English dictionary for chemists. A. M. Patterson. Wiley. 316p. $2.00.

The scope of the book is broader than the title would seem to indicate. It gives English meanings, not only of German words occurring in the literature of general and industrial chemistry, but includes words used in scientific and technical literature generally, as well as a good general German vocabulary. Very useful to anyone who has occasion to read German scientific or technical books and periodicals.

Seat weaving. L. D. Perry. Manual Arts Press. 84p. $1.00.

An elementary book, very fully illustrated, which shows in detail the processes of weaving cane, rush, reed or splint seats for chairs and stools. Primarily a text-book for manual training classes, but would also be a satisfactory guide to amateurs interested in this kind of work.

Author is supervisor of manual training, Joliet, Illinois.

Introduction to the theory and practice of boot and shoe manufacture. Frank Plucknett. Longmans. 336p. $2.00 net. (Longmans’ technical handicraft series.)

Primarily a text-book for technical schools, but might be read with profit by all engaged in the manufacture or selling of boots and shoes. Describes hand and machine processes and their underlying principles, considering the whole subject from the anatomy of the foot to the finished shoe, with much useful information concerning leather.

The book is a valuable addition to the meager literature on this subject.

Author is assistant master, Cordwainers’ Technical College, London.

Equipment for the farm and farmstead. H. C. Ramsower. Ginn. 523p. $2.70. (Country life education series.)

Text-book for agricultural schools, or useful reference for the practising farmer. Discusses the layout of farms, fences, farm buildings, lighting, water supply, sewage disposal, farm implements and machinery, windmills, water power, and other matters relating to the equipment necessary to carry on present-day farming operations.

Author is professor of agricultural engineering in the College of Agriculture of the Ohio State University.

Elements of industrial chemistry. Allen Rogers and others. Van Nostrand. 513p. $3.00 net.

An elementary text-book which describes the manufacture and preparation of many products of industrial chemistry. The matter is descriptive and not detailed enough to be of value to the works chemist, but would be understandable to the average reader interested in the subject.

The book is an abridgment of “Industrial chemistry, a manual for students and manufacturers,” 2d. ed., Van Nostrand, 1915, $5.00 net, which book describes processes of manufacture in considerable detail, but would be too technical except for chemists.

Dr Rogers is in charge of industrial chemistry, Pratt Institute, Brooklyn.

Problems of the finishing room: a reference and formula manual for furniture finishers, woodworkers, builders, interior decorators, manual training departments, etc. W. K. Schmidt. Periodical pub. co., Grand Rapids, Mich. 453p. $5.00 net.

Authoritative manual for those employed in the finishing of woods by means of fuming, staining, varnishing, enameling, lacquering, etc. Treats of the preparation of the woods and describes in detail the processes required for the various kinds of finish.

Directions are given for the selection, preparation and testing of the stains, oils, varnishes, glues and other materials used in wood finishing, and miscellaneous information relating to the work.

In the formula section blank leaves are inserted for entering new formulas.

The author writes from large experience as chemist and finishing expert.

American boys’ book of electricity. C. H. Seaver. McKay. 365p. $1.50 net.

Interesting book for boys, giving simple explanations of electrical phenomena with illustrative experiments and information about batteries, electro magnets, telegraph and telephone, wireless communication, house wiring, electrical equipment of gasoline engines, etc. Good illustrations.

House wiring, in a boys’ book, might better have been omitted, owing to fire insurance regulations, but a word of warning is given at the end of the chapter.

The application of efficiency principles. G. H. Shepard. Engineering Magazine Co. 368p. $3.00.

An attempt to show how to apply efficient methods of management in industrial works; Harrington Emerson’s “Twelve principles of efficiency” being adopted as a basis. This is one of the few books on efficiency which treat of its practical applications.

Masters of space; Morse and the telegraph, Thompson and the cable, Bell and the telephone, Marconi and the wireless telegraph, Carty and the wireless telephone. W. K. Towers. Harper. 301p. $1.25.

Readable, interesting account of the discovery and development of the various means of long-distance communication.

Contains preliminary chapters on communication among the ancients, signaling, and early investigations in long-distance communication.

Good book for readers of high school age.

Aircraft of to-day; a popular account of the conquest of the air. C. C. Turner. Seeley. 315p. $1.75.

Popular, non-technical book on the navigation of the air and of the mechanical devices which have been and are now employed for the purpose. Tells of the history and development of aviation, of the atmosphere, principles of mechanical flight, airship theory, sensations during flight, use of aircraft in war, battles in the air, etc. An appendix contains aviation world records, vocabulary of aeronautical terms, French technical terms, tables, and a bibliography. Illustrated.

Author is a lieutenant in British service, and has written other books on aeronautics.

Handbook on care and operation of gasoline engines, prepared under direction of the captain commandant, U.S. Coast Guard. Washington, Government Printing Office. 92p. Paper, 10c.

A 92-page pamphlet prepared for the U.S. Coast Guard, but useful to anyone needing a very elementary book on gasoline engines. Written in the plainest manner possible for readers without technical training. Libraries may possibly obtain a gratis copy by applying direct to the Treasury Department, Washington, D. C.

Technical equipment of the signal corps. 1916. (Manual No. 3.) U.S. Signal Office, Washington. Government Printing Office. 554p. $1.00.

Contains much plainly stated information about primary and secondary batteries, electric cables and cable systems, telegraphy and telephony, overhead line construction, underground and submarine cables, telegraph and telephone instruments and switchboards, wiring diagrams, testing, etc.

Prepared for the U.S. Signal Corps, the book is also valuable to anyone interested in telegraph and telephone installation and operation.

Libraries may possibly obtain a gratis copy by applying direct to the War Department, Washington, D. C.

Building estimator’s reference book; a practical and thoroughly reliable reference book for constructors and estimators engaged in estimating the cost and constructing all classes of modern buildings, giving the actual labor costs and methods employed in some of our present-day structures, together with all necessary material prices and labor quantities entering into the cost of all classes of buildings. F. R. Walker. 2d ed. 3535p. Author. $5.00.

Gives laborers’ time, quantities and costs of materials, and other data useful in estimating the cost of building operations. Based on work which has actually been performed. Every stage of the work is separately considered.

The book is well up-to-date, but in the nature of things will be liable to frequent revisions.

The avoidance of fires. A. D. Weeks. Heath. 128p. 60c net.

School text-book. Considers the causes of fires in buildings, the damage which may be caused thereby, how to put out fires, fire drills, etc. Illustrated. Bibliography.

Author is professor of education, North Dakota Agricultural College.

Sanitation practically applied. H. B. Wood. Wiley. 473p. $3.00.

Deals with the practical side of public health work: school, home, factory and community sanitation, milk supply, sewage disposal, control of disease, destruction of insects which transmit disease, child welfare, etc. Valuable to public health officials and others interested in practical means of sanitation.

Author is assistant commissioner, West Virginia State Department of Health.