THE INDIA RUBBER WORLD 



[September 1, 



trials rmiy then be expected to yield 6 per cent, and rubber shares 

 10 per cent., owing to expanding outputs and declining costs, de- 



.i reduced selling price of the product. The editor tl 

 the topic of the balance sheet analytically as a virtual prospectus 

 that light by the prospective investor. The sec- 

 Selecting ,i Now Issue," contains much sound advice 

 and information. Under the statement concerning the affairs of 

 each company is found an opinion summing up the investment 

 value I hese opinions are valuable and evidently 



are unprejudiced ami independent. The book is in three alpha- 

 al sections, treating, in order. Government and Municipal 

 s, Joint Stock Companies and Securities I 

 Tin sily ranks as thi mplete and authoritative 



work of its kind. 



RUBBER I M 1 - \M> 1 (CURES, NO FUNE, 1915 COMPILED 



by Frederic I. Mathii ipthall avenue, London, E. C. 



[Paper, 135 pages: price, one shilling net.) 

 rhis compact arrangement of tables presents in convenient 

 form the essential tacts and figures relating to rubber pi 



nglish control. Especial attention i- directed to 

 the reduction in costs of production since the last compil 

 and the expectation of th( that these will be still further 



lowered this year. This will ! I about by improvements 



in management and field methods. Most companies are now 

 thinning out trees, a- with increasi I smaller nunil 



trees to the acre produce as much rubber > t number 



and permit a saving in tapping. In 1913 the exportation of plan 

 tation Para nearly equaled that of all wild grade via Para, and 

 •ii 1914 surpassed the latter'- expert- b> 14,000 tons, ["he book 

 is of convenient pocket size and well adapted for referer 



NEW TRADE PUBLICATIONS. 



(fT-HE CARE AND REPAIR OF TIRES" is the title of a 

 A valuable handbook published by tin Firestone Tire and 

 ier C''.. of Akron, < Ihio, for th the pockel 



• s. The object of the Firestone booklel 



educate motorists 0' eliminate arj tire expense i\ telling 



them certain things they should know about the tires the) USi 

 tire- will stand abuse, but there is a limit to their capacity 

 to do so and motorists who will carefullj read the instructions 

 contained in "The Care and Repair of Tires" should easilj be 

 able to materially reduce their tire bills. 



RUBBER AND GUTTA PERCHA MANUFACTURE. 

 The India Rubber, Gutta Percha 8 Telegraph Work- Co., Lim- 

 ited, of Silvertown, London, ha- published for distribution a finely 

 printed book of 34 pages containing well selected historical data 

 concerning the origin and growth of the company, which began 

 manufacturing in Greenwich in 1852. The departments men- 

 tioned are rubber, gutta percha, submarine cable, electrical, me- 

 chanical and testing Much interesting technical information i- 

 to be found in the account of the manufacturing 

 scribed, particularly that relating to cord motor tin-, golf balls. 

 submarine cable making and laying, instruments for electrical 

 testing and operation of cables. The book is well illustrated, and 

 how unique machine- and applications, An 

 l ded list of tin- company's manufactures inch' tically 



thing in rubber except shoes, clothing and druggists' sun- 

 dries certainlj everything in gutta percha, and much in elec- 

 trical instruments, machinery and electrical accessories. 



PUBLICATIONS OF UNITED STATES BUREAU OF STANDARDS. 



Testing vnd Propi H Materials.— Circular No 



41. This is an account of the standard methods of testing raw 

 and unspttn fibers, yarn, thread, twine and fabrics, concluding 

 with general instructions regarding applications for tests and 

 the schedule of fees. It is a pamphlet of 16 pages. 



H IRE .* roi 0G\ Circular \, . 37. 



This pamphlet contain- the definitions of term.- used in the 

 nomenclature of electric wire- ami cable-, illustrated with views 

 of cable section- Stranding receives Special an \n il- 



lustrative discussion introduces the terms defined and shows 

 their proper use in the context 



The Testini i p Got I irculai No 30 rhis is 



a third edition of the pamphlet entitled "The Testing of Rubber 



Is." The new edition of this valuable publication of the 



Department of Commerce is double th eding 



n. l'lie physical and chemical sections include the Bureau 



of Standards' methods, fully detailed and illustrated. ["he 



book should b« in the hands oi everj >t tests and 



every chemist who is concerned with the valliai rubber 



.ire obtainable from the Superintended oi Do 



ments, Government Printing Office, \\ I at 15 



cents pi r copy. 



CAOUTCHOUC. 



The 1 a t rossi Rubbei Mill- i o., ol La ( i — ;e, Wisconsin, has 

 issued for advertising purposes .> verj attr; ochun 



titled "Caoutchouc — The Story of the Manufacture ' Rubbei 

 Footwear." 



It is a well written account, profusely illustrated with sib 

 views showing in systematic progression th< manufacturi oi 

 rubber from forest io the finished rubber footwear In connec- 

 tion with the text the book gives a uii cleai presentatii n of an 

 important branch of rubber manufacture oi greal popular in- 

 terest. It i- full of information, and has a educational 

 value for tin- general public. Presumably th< book i- foi 

 distribution on application. 



COMMERCIAL TREATIES OF THE UNITED STATES. 



The National Trade council, with headquarters in \o\ i'ork, 

 has .m authorized maximum membership of 50 merchants, manu 



facturers, railroad and steamship men and bail • 



all sections of the United State- and collective^ si 



ral interests of all elements engaged in foreign ti 

 Samuel P. Colt, president ol thi I nited States Rul i . ami 

 Maurice Coster, foreign manager of tin VVestinghouS( I lectrii 

 i\ Manufacturing Co., are included in the li-t of members, 



In anticipation of the responsibilities which will fall upon the 

 United State- when the world begin- to repaii thi 

 lations destroyed or dislocated by war, the Foreign Relations 

 Committee of the National Foreign Tradi aused 



to <,\ prepared by Carman F. Randolph, of tin ^n\ Vorl 



ipacl "Brief on Commercial Treaties oi the United States." 

 The brief iists and d 



n the United States ami other nation-, and in an appi 

 embodies thosi provisions oi existing treaties relatin| 



ELECTROLYTIC INSULATION OF ALUMINUM WIRE. 



In a papei recentlj read before the ^meri I I 



iv, C. E. rid L W. Chubb di cribi a proce: Foi 



the production of an insulating film of high 

 on the surface urn wire. The best lectroliti n solu 



borate of aluminum, and abovi II odium sili- 

 cate. The coating obtained with the latter material 



electrii resistanci much greater than that of the © 

 obtained by othei processes, ["wo wires so treated and ■ 

 twisted together withstand a ] to 500 olts. 



The Draper-Maynard Co.. of Plymouth, .''■ hire, has 



ready for distribution its illustrated catalog of athlctii 

 n.r the 1915 1916 season, as well as a new 40-pagi I klet giv- 

 ing the official football, basket ball and occei ootball law 

 the season, with illustrations of outfits. These rule I ol " 

 for general distribution and may be obtained from dialers or 

 from the company's offices direct. Similar rule books covering 

 baseball and tenni ari published about the first of January. 



