. India rubber world. n theoretical nr practical form. \R(II IN .\MERIC.\. V.\ ARTIIIR D. LITTLE,l^oston. 1913. t Paper, Svo, li pages.] In the address recently delivered by Mr. \. D. Little, as presi-dent of the American Chemical Society, at Rochester. X. V(and now reprinted), he touched upon the origin and develop-ment of the principal inventions on which modern industry is founded. Referring to that of automobiles, he mentioned thefact that one tire manufacturer spends $100,000 a year on hislaboratory, thus indicating the value of industrial research tothat industry. DEK
. India rubber world. n theoretical nr practical form. \R(II IN .\MERIC.\. V.\ ARTIIIR D. LITTLE,l^oston. 1913. t Paper, Svo, li pages.] In the address recently delivered by Mr. \. D. Little, as presi-dent of the American Chemical Society, at Rochester. X. V(and now reprinted), he touched upon the origin and develop-ment of the principal inventions on which modern industry is founded. Referring to that of automobiles, he mentioned thefact that one tire manufacturer spends $100,000 a year on hislaboratory, thus indicating the value of industrial research tothat industry. DEK .M.\.\lllOT-K.\UTS(;ilfl< (MANIHOT RUUBER). PRO-fessor Dr. A. Zimniermann, Director of the Imperial AgriculturalInstitute, Amani, German East Africa. Jena, 1913. Giistav Fischer.[Paper. 342 pages, with 149 illustrations.] In this coiTiprehensive voluine Professor Zimmermann has toldthe story of Maiiihot rubber, under the various aspects of itsbotany, distribution, ciilfivation. diseases, collection and prepara-. M.\N.\GER E. KoHLER, Beside ll-YE.\R-OLn ManilintGlaciovii Tree on Lew.\ \tiox (G. E. A.). tion. As it is known, there are 129 varieties of Mauiliot, ofwhich 6 contain rubber—these being the following; Glaciovii,Dichototna, Piaiihycnsis. Hcftafhylla, Violacca and these the first four are the most important. Mdiiihot Cla::iozii was discovered liv Dr. Glaziov, the French March I. 19!4.; THE INDIA RUBBER WORLD 299 botatiist, and was first described by Miiller, of Aargau. Accord-ing to Ule, it is indigenous to the Brazilian states of Rio Grandedel Norte, Parahyba and Ceara, being chiefly known as Ceararubber, or as Manitoba Ceara. In its natural home it attainsa height of 50 feet, with a girth of 5 feet: some trees being 100years old. Maiiihot Diclioltiiiui was discovered In IK- in the soutlu-asternpart of the state of Bahia, and derives the name of Jcquie Mani-toba (or Jequie rublier) from a small town in the center of thedistrict in que
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