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THg J O U R N A L OF I N D U S T R I A L AND ENGINEERING C H E M I S T R Y .
detection of added water, if in any quantity as would be used in fraudulently adulterated milk. SLEETHR BULL.
Jan., 1 9 1 I
best idea of the scope and thoroughness with which the work has been carried out. ( I ) Geweral Part, by F. W. Hinrichsen. (A) Introduction, ( B ) OccurOHIO STATE UXIVERSITY, rence of Rubber, (C) Properties of the Latex, (D) COLUMBUS,OHIO. Constitution of the Rubber Hydrocarbon, (E) Other Substances Associated with the Rubber Hydrocarbon in Crude Rubber, (F) Physical Properties of Crude BOOK REVIEWS AND NOTICES. Rubber, (G) Chemical Properties of Crude Rubber, (H) Theory of Vulcanization of Rubber, (I) Technical High Speed Steel. The Development, Nature, Treatment, and Use of High Speed Steels, together with some suggestions as Handling of Rubber llaterials, (J) The Properties of to the Problems Involved in Their Use. BY 0. M. BECKER, Vulcanized Rubber. (11) Chemical Analysis of RwbIndustrial Engineer. Cloth, pp, v + 344. McGraw-Hill Book bor, b y F. W. Hinrichsen. (A) Analysis of Crude Company, 1910. Price, $4.00 net. Rubber, (B) Analysis of Vulcanized Rubber, (C) Life A very good book from both practical and theo- Tests of Finished Rubber Articles. (111)Mechanretical standpoints. I n a general way the develop- ical Testing of Rubber, by K. Memmler. (A) The ment of high-speed steel and the marvelous advance Practical Carrying Out of Strength Tests on Soft it has caused in machine operation and output are Rubber. (B) Results of Strength Tests on Soft Rubknown, but one begins to understand the real mag- ber according to the Older and More Recent Publicanitude of that advance as he turns the pages of this tions. book. The authors have compiled and arranged very exThe first chapters give a short history of the de- cellently the work of the older and modern investivelopment of metal cutting from earliest times and gators in the field of rubber testing. Of particular methods of manufacture of the ancient steels, includ- interest is the attention given to the physical testing ing the famous Wootz and Damascus brands, the of vulcanized rubber, a division of the subject in most later crucible, open-hearth, Bessemer and electric other works that has been given but slight attention. furnace processes, relate the discovery of MushetNevertheless, from the standpoint of our knowledge the forerunner of the high-speed steels, and the ex- of rubber as a material of construction it is one of tensive experiments of Taylor and White which re- the most important. The discussion of tensile tests, sulted in the wonderful steels which we have to-day. the pressure tests, the machines and apparatus, the Tables are given of the chemical composition of the elongation cur\-es, the hysteresis curves, is very advarious types, and their properties and requirements mirably written. W. @. GIN. for hardening explained according to the latest and accepted theories of metallurgy. The author has Die Chemie der Cellulose. By CARL G. SCFWALBE.First Half. had the aid of such well-known metallurgists as Car8vo. pp. 2 7 2 . Berlin: Gebruder Borntraeger, 1910. penter, Taylor, Stoughton, and others, in ways of This work is unquestionably the best on the chenisuggestion, criticism, use of material, proof-reading, istry of cellulose which has as yet been published. etc. The metallographical explanations and photo- Vhile i t is largely bibliographic in its text, its conmicrographs are good and make clear the theories. struction and method of handling is excellent. This The balance and larger part of the book is devoted first half deals b i t h cotton cellulose as a type, and to the practical part of the subject: the making of considers its behavior and relation towards water, the steel, forging the tools, hardening, tempering, heat, alkalies, acids, salts, dyes, oxidation and reannealing, grinding, etc. The descriptions of the ducing agents, solvents and ferments. The cellulose various types of hardening and annealing furnaces, products produced b y hydrolysis and oxidation are pyrometers, machines, etc., are very complete, treated a t some length. The conclusion of the first and apparently no usable type is omitted. Chapters half commences the consideration of the esters of are given on speeds and feeds, new requirements cellulose which, as stated, are to be handled fully in for machines, notes on remodeling old equipment and the second half to be published very soon. the problems involved. The book is well illustrated. H.S. MORK. I n the appendix are given several practical tables. The volume should be of much assistance to the super- Die Unterscheidong der Natiirlichen und Kiinstlichen Seiden. intendent, metallurgist or practical tool man. By DR. ALOIS HERZOG Paper, I z r n o , pp. 78. Dresden: I. M. BREGOWSKY, Theodor Steinkopff, 1910. Price, 7 5 cents, L. W. SPRING. This small pamphlet, containing fifty exccllent Der Kautschuk und seine Priifung. By F. UT.HISRICHSEN and K. microphotographs and illustrations, treats in a full 1 L I m m m R . 8v0, pages x + 263. Leipzig: S. Hirzel, 1910. and complete manner of the methods of differentiaPrice: Paper, 8 marks; cloth, 9 marks ting the various artificial silks from each other and This is, doubtless, the most comprehensive work from the natural product. While both chemical and that has been published up to date on rubber and optical methods are given, the latter receive the greater is particularly valuable in the rubber industry to those attention. Excellent photographs are shown of the interested in the physical testing of vulcanized rub- appearance of the fibers under the ultramicroscope H. S. MORK. ber. A glance Over the table of contents gives the a t a magnification of 2 5 0 0 .
SCIENTIFIC A N D I N D U S T R I A L SOCIETIES. Testing for Metallurgical Processes. By JAMES A. BARR. Izmo. Cloth, pp. 208. San Francisco: Mining and Scientific Press, 1910. Price, $z.oo.
This book is based upon notes and experiments made by the author, while instructor a t the Michigan College of Mines, and aims to describe laboratory experiments and methods of testing ores which will enable the student to secure definite data upon which to base an opinion as to the most available method for the extraction of a metal from its ore. It deals with the ores of gold, silver, copper and zinc, and describes the principles upon which depend the effective application of the various well-known processes, including amalgamation, chlorin‘ation, cyanidation, roasting, refining of lead bullion, zinc smelting, and smelting of lead silver ores. An interesting chapter on the properties of slags is especially worthy of mention. The illustrations of this book are simple and clear. The book presupposes a t least an elementary knowledge of chemistry, but its style is extremely practical. This publication should prove of value not only to students but also to those interested in the mining or the treatment of the metals mentioned.
WM. HOSKINS. Practical Stamp Milling and Amalgamation. By H. W. McFARREN. Izmo. Cloth, pp. 165. San Francisco: Mining and Scientific Press, 1910. Price, $ 2 00.
This, is a practical book and does not pretend to be anything else. The author has evidently told what he has learned in th’e practice of milling and amalgamation, and tells it as one who knows little of the subject would like to have it told, in sufficient detail. The book can be recommended to those employed in the stamp mill or having to do with the treatment of gold ores by the ordinary milling processes. The book is particularly valuable to a person about to engage in the mining or milling of gold ores. WM. HOSKINS.
SCIENTIFIC AND INDUSTRIAL SOCI€,TIES. ASSOCIATION OF FEED CONTROL OFFICIALS. The second annual meeting of the Association of Feed Control Officials was held a t the Raleigh Hotel, Washington, D. C., November 14-16th. There were in attendance at the meeting some eighty feed control officials, manufacturers and their representatives, representing practically all sections of the United States and all phases of the feeding-stuff trade. The most important subject before the convention was the adoption of a draft f0r.a uniform feeding-stuff law for the states and uniform definitions. The program was carried out as follows: FIRSTDAY-MORNING SESSION. Monday, November 14, 1910, 10 o’Clock. Raleigh Hotel, Washington, D. C. 1. Convention called to order b y the President, Benj. L. Purcell, Virginia. 2. Roll Call. 3. Appointment of Comm‘ittees. 4. President’s Address-Benj. L. Purcell. Vi. ginia. 5 . Report of Executive Committee-L. F. Brown, Chairman. New York. 6. Report of Committee on Credentials. 7. New Business.
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Recess. AFTERNOON SESSION,2 O’CLOCK. Discussion of that part of report of the Executive Committee relating to a Uniform Law and Definitions for Feeds. By Feeders, Individual Manufacturers and Represeptatives of Trade Associations. Executive Session. SECONDDAY-MORNINGSESSION. Tuesday, November 15, 1910, 10 o’CIock. 1. Reports of Committees. 2. Address-Importance of Making Feed out of Sound Material-Dr. H. W. Wiley, Chief U. S. Bureau Chemistry. 3. Address-Coiiperation between Feed Dealer and Executive of the Law-Dr. C. D. Woods, Maine. 4. Address-The Manufacturers’ Position and Needs-Robt. W. Chapin, Buffalo, N. Y. 5 . Discussion of the above addresses. 6. Unfinished Business. SECONDDAY-AFTERNOONSESSION,2 O’CLOCK. EXECUTIVE SESSION. Discussion of Uniform Feeding Stuff Law and Definition for Feeds Open to Members of this Association only.
THIRDDAY. Wednesday, November 16, 1910, 10 o’clock 1. Reports of Committees. 2. Continued discussion of a Uniform Feeding-Stuff Law and Definitions for Feeds. 3. Election of Officers and Executive Committee for ensuing year. 4. Unfinished business. Adiotunment.
The meeting was a very profitable and valuable one to all concerned and resulted in definite steps being taken toward the adoption of a uniform law. After a full and free discussion by the feed control officials and manufacturers present, the draft for a proposed uniform law (see below) was adopted. On motion the Committee on Definitions was continued. Definitions prepared by the committee covering some fifty terms used in the feeding-stuff trade were tentatively adopted and ordered published for the information of the trade and to elicit criticism. The Executive Committee was instructed to consider the advisability of amalgamating with some other association engaged in work similar to that of the feed control. The report of the Nominat ng Committee was unanimously adopted and the following officers were elected: President, L. F. Brown, New ,York; Vice-President, W. P. Hand, Mississippi; Secrelary a n d Treasurer, J. D. Turner, Kentucky; E x e c u t k e Committee, W. D. Woods, Maine, J. K. Haywood, U. s. Department of Agriculture, and W. J. Jones, Jr., Indiana. Association adjourned at noon, November IGth, subject to call of Executive committee. PROPOSEDUNIFORMFEEDLAW. SECTION I .-The term “Commercial Feeding-Stuffs” shall be held to include all feeding-stuffs used For feeding live stock and poultry, except whole seeds or grains; the unmixed meals made directly from the entire grains of corn, wheat, rye, barley, oats, buckwheat, flaxseed, kaffir and milo; whole hays, strams, cottonseed hulls and corn stover when unmixed with other materials. Together with all dther materials containing 60 per cent. or more of water. SEC.2.-Every lo! or parcel of commercial feeding-stuffs sold, offered or exposed for sale or distributed within this state shall have affixed thereto a tag or label, in a conspicuous place ov the outside thereof, containing a legible and plainly printed statement in the English language, clearly and truly certifying: (a)the net weight of the contents of the package, lot or parcel; ( b ) the name, brand or trade mark; (c) the name and principal address of the manufacturer or person responsible for placing the commodity on the market;
