AGRICULTURAL INDEX 



949 



Royal Scottish arboricultural society 



Monthly meeting of the Aberdeen branch. 

 Gard Chron (Lond) G7:9 Ja 3 "20 

 Royal show. See Royal agricultural show 

 Rubber 



Bacterial changes in hevea latex. G. Stafford 

 Whitby. Int U Sci & Prac Ag lO.no 7:900-1 

 Jl '19 



Chrysil rubber. Ag News 19:77 Mr 6 '20 



Cold vulcanization of rubber. Ag News 19: 

 228 Jl 24 '20 



Creping African rubber. G. Von Pelt. Int 

 R Sci & Prac Ag ll.no 1:123-4 Ja '20 



Cultivation of rubber-plants in the Philip- 

 pine Islands. H. Jumelle. Int R Sci & 

 Prac Ag lO.no 4:418 Ap '19 



Hevea in the Belgian Congo. Y. De Bavay. 

 Int R Sci & Prac Ag 10.no 5:564-5 My '19 



Improvement of West African varieties of 

 rubber. Int R Sci & Prac Ag ll.no 9:988-94 

 S '20 



Increase in girth of hevea trees. P. E. Keu- 

 chenius. Int R Sci & Prac Ag 10.no 7:898-9 

 Jl '19 



La industria del caucho en el Amazonas y en 

 otros lugares. J. B. Percival. il La Hacienda 

 16:246-7, 282-3, 302-3, 334-5 My-Ag '21 



Notes on the cultivation and working of 

 hevea in Cochin-China. E. Girard. Int R 

 Sci & Prac Ag 11, no 1:46-51 Ja '20 



On the urgency of washing freshly prepared 

 rubber sheets in streaming water. F. C. Van 

 Heurn. Tropical Ag 56:334-7 Je '21 



Precaution during smoke treatment of rub- 

 ber. G. Vernet. Int R Sci & Prac Ag 11, no 

 3:327-30 Mr '20 



Production of Guayule rubber. H. C. Pearson. 

 Int R Sci & Prac Ag 10, no 3:22S-y;-! Mr '19 



Research on rubber cultivation. Science (Sci- 

 ence Press. Garrison. N.Y. 15c) n s 51:82-3 

 Ja 23 '20 



Pvubber. Jamaica Ag Soc J 24:323-4 S '20 



Rubber plant survev of western North Amer- 

 ica. H. M. Hall and T: H. Goodspeed. il Cal 

 Univ Pub Bot v 7,nos 6-8:159-278 '19 ($1.25); 

 Excerpts. Ag News 20:307 O 1 '21 



Rubbei- planting in Tanganyika. London 

 Times Trade Sup 6:306 Je 5 '20 



Rubber producing plants of minor impor- 

 tance. H. C. Pearson. Int R Sci & Prac Ag 

 10, no 4:418 Ap '19 



Rubber-producing weeds in Germany. (Com- 

 merce Reports no. 20) p 382 (Ja 24) '19 

 U. S. Bur. of foreign and domestic com- 

 merce, Washington, D.C. 



Rubber tree in Indo-China. A. Chevalier and 

 others. Int R Sci & Prac Ag lO.no 2:183-6 

 F '19 



Spontaneous coagulation. Tropical Ag 56:337 

 Je '21 



Studies on the rustiness of sheet rubber. H. 

 J. Hellendoorn. Int R Sci & Prac Ag 11, no 

 4:508-11 Ap '20 



Sugar as a coagulant for hevea latex. R. D. 

 Anstead. Ag J of India 14:171-4 Ja '19 



Tanganyika territory: rubber, sisal, and 

 minerals. H. J. Solomon. London Times 

 Trade Sup 6:226 My 15 '20 



Thinning out of rubber: according to yield- 

 records and the occurrence of brown bast. 

 J. R. Harmsen. Tropical Ag 57:75-81 Ag '21 



Vulcanized rubber; a Manchester discovery. 

 London Times Trade Sup 6:378 Je 19 '20 



Wealth of Straits Settlements. London Times 

 Trade Sup 6:392 Je 26 '20 



Yield from individual rubber trees. R. D. 

 Anstead. Tropical Ag 57:81-2 Ag '21 

 ^ee also Ocotillo; Para rubber trees 



Diseases and pests 

 Petch. T. Diseases and pests of the rubber 

 tree. O x,278p il $8 (20s) '21 Macmillan co, 

 66 5th av, N.Y. 

 Root diseases and brown bast of para rub- 

 ber in the East. Ag News 20:270 Ag 20 '21 

 See also Brown bast 



Experiments 

 Experiment on thinning out old hevea trees, 

 in Java. P. J. S. Cramer. Int R Sci & Prac 

 Ag ll,no 6:721-5 Je '20 



Experiments with hevea in the Dutch East- 

 Indies. P. E. Arens and others. Int R Sci 

 & Prac Ag 9, no 10:1195-6 O '18 



Xnies and txperinieuis on tht coagulation of 

 hevea latex. G. Vernet. Int R Sci & Prac 

 Ag 111, no 7:S99-900 Jl '19 



Prices 



History of prices during the war; prices 

 of rubber and rubber products. I. Lubin. 

 (Price B. 30) 35p '19 U.S. War industries 

 bd., Washington, D.C. 



Statistics 



India rubber: inteinational trade, calendar 

 vfars 1909-1917. L S Ag Yearbook l'jU:o.-4 

 '19 

 Rubber industry 



Effect of location on prosperity of American 

 rubber industry. L. W. Alwyn- Schmidt. In- 

 dia Rubber World (25 W. 4th st. N.Y. 35c) 

 62:407-9 Ap 1 '20 



Favorable condition of Italy's rubber indus- 

 try. H. C. MacLean. (Commerce Reports 

 no'. 55) p 1299-300 (Mr 6) '20 U.S. Bur. cl 

 foreign and domestic commerce, Washing- 

 ton, U.C. 



Importations of crude rubber into the United 

 States by months for the year ending Dec 

 ol. i'Jl'J. 2p mini '2u Uubber asan. ot 

 Am., 52 Vanderbilt av, N.Y. 



Rubber industry and lecon.struction policies. 

 (Commerce Reports no. 179) p 668-71 (Ag 1) 

 '19 U.S. Bur. of foreign and domestic com- 

 merce, Washington, D.C. 



Rubber industry; demand far ahead of sup- 

 ply. London Times Trade Sup 6:459 Jl 10 

 •20 



Rubber industry in Bolivia. {In Bolivia; a 

 commercial and industrial handbook, p. 

 169-78) '21 U.S. Bur. of foreign and domes- 

 tic commerce, Washington, D.C. 



World's rubber: where rubber comes from 

 and where it goes, and the many coun- 

 tries which are involved in the commodity's 

 production, distribution, consumption and 

 trade. J: J. Macfarlane. Commercial Am 

 (34th St below Spruce, Philadelphia S2 t)er 

 yT.) p 25 Jl '20 



Rubber plantations 

 Life on a Sumatra rubber plantation, il In- 

 dia Rubber World (25 W. 45th st, N.Y. 

 35c) 62:423-4 Ap '20 

 Rubber plants 

 Ficus elastica. Am P^or 54:837 My 8 '20 



Diseases and pests 

 Behavior of crown gall on the rubber plant 

 (ficus elastica). M. Levine. bibliog il Myccl 

 13:1-11 Ja '21 



Rubus 



Further data on the orange-ru.sts of rubu.s. 

 L. O. Kunkel. bibliog il J As Research 19: 

 5*1-11 Ag 16 '20 

 Hee also Blackberries; Raspberries 

 Rubus macraei. See Akala berry 

 Ruby key; story. Cal Cultivator 55:340, 388 S 



11-18 '20 

 Rue 



See also Buchu 



Rugs 



Braided rag rugs. Nat Stock & F 44:i;oo 



Ja 1 -21 , .. 



Coming of the rag mat. M. H. Northend. il 



Xor-West F 40:394 Ap 5 '21 

 Drawn-in rugs. A. V. Carrick. il Country 



Life 38:69-71 Je '20 

 Home-made brooms, rugs and mattresses. M. 



Myers, il Tenn Ag Ext Pub 77:1-10 '19 

 Home-made rugs and covers. L. H. Crowley. 



il Successful F 19:162 Ja '20 

 How to make rag rugs. Am Coop J 14:368 My 



'19 

 Making hooked rugs. Mrs J. Reisacher. il 



Power F 30:8 S '21 

 Making of rag rugs. Rural N T 79:314 F 



14 '20 

 Mrs Moore's hooked rug. E. Moore, il Ohio 



F 144:212 Ag 23 '19 



