414 



Demand for rubber, has increased, in 

 Para and other regions, wild trees have 

 been destroyed, price increased, 374 ; 

 is increasing, likely to supersede iron, 

 38i 



Digging holes for staking for coffee, time 

 for 317 ; manner of, size in Soconusco, 

 in Ceylon, planting without, 318 



Discovery of rubber-tree, verylittleknown 

 of, French astronomers first to call 

 attention to it, 379 



Distance between coffee plants, difference 

 of opinion regarding, 302 ; general 

 practice of, what it depends on, 303 ; 

 area of each tree, 314 ; advantages of 

 long, advantages of short, 305 ; rules 

 regarding, 305, 306 



Distance between rubber-trees, very 

 important, makes difference in yield in 

 proportion to distance apart, 389 



Drainage, how it should be made, method 

 in Ceylon, Mr. Sabonadiere on, 335 



Drying coffee beans in Guatemala, put 

 on threshing floor and exposed to sun, 

 should not be piled up, time required 

 for, 346; stoves invented for but not 

 used, 347 



Drying coffee in Ceylon, heaped upon 

 inclined platform to drain and then 

 spread out to dry in sun, good, inferior 

 and waste coffee dried apart, 349 ; bean 

 dried, 350 



Dyeing coffee in Guatemala, bluish color 

 desirable in Soconusco markets, how 

 color is given, 347 



E 



Encyclopedia Britannica on india-rubber, 



377 

 Enemies to coffee-tree, many in Ceylon, 



336 ; grubs, coffee bug, ants in Ceylon, 



337 ; ants in Soconusco and Guatemala, 

 337 



Escobar, Don Sebastian, experiment 

 made with transplanting rubber- trees, 

 386, 387 ; estimate of cost of rubber 

 plantation by, 393 



Esmeralda, large rubber plantation on 

 southern coast of Oaxaca, 374 



Evaporation, loss of rubber, 382 



Export of india-rubber, from United 

 States, manufactured and crude, in 1856 

 and 1857, from Para in 1856 and 1869, 

 400 ; from Para from 1851 to 1870, 401 



Extraction of rubber, by making incision 

 in bark, exposed to sun or fire, water 

 evaporates and leaves rubber, exposed 

 to air it becomes dark, 379 ; method in 

 Soconusco ruinous to trees, to extract 

 properly a more adequate instrument 

 than machete and something better than 



leaves or clay for receptacle are re- 

 quired, 392 ; rules in regard to, incision 

 should be healed, 393 



Faraday, Prof., analysis of rubber, 380, 

 382 



Felling trees, best season for, to prepare 

 coffee plantation, 313 



Ferguson, A. M. and J., india-rubber and 

 gutta-percha, 375 



Fertilizer for coffee, necessity for, and 

 advantage of, used in Soconusco, used 

 in Ceylon, 338 ; substances used, 339, 

 340 ; manner of applying, 340, 341 ; 

 when to use, cost of, 341 



Ficus elastica inferior to American rub- 

 ber, 399 



Finck, Hugo, his opinion in regard to 

 shade, in regard to coffee-trees, 368 



Forests, destruction of, may be fatal to a 

 region, 363 



Frisman, found rubber-trees in 1751, 379 



Fruit of coffee-tree, time of crop, time 

 of second crop, 4th year after trans- 

 planting best crop, 342 ; size, color, 

 when it should be picked, 343 



Future of india-rubber, very great, 373 ; 

 large profits, safe industry, 402 



Gauffrau, Dr., rubber plantation in Nica- 

 ragua, 385 



Geological character of soil, how it affects 

 climate, 363 



Goodyear, Mr. Charles, inventor of vul- 

 canized rubber, 380 



Griffith, Mr. William, report on Asiatic 

 rubber in district of Chardwar, 399 



Guatemala, coffee-raising of to-day and 

 twenty years ago, 283, 284 ; price of 

 land compared with land in Mexico, 

 284 ; coffee culture in, 284 ; labor in, 

 290 



H 



Hardiness of rubber-tree, simplifies cul- 

 ture, 389 



Harriman, F. O., letter to India-Rubber 

 World, recommending Tehuantepec 

 lands for coffee-raising, 360 ; Mr. Ro- 

 mero writes to editor of India-Rubber 

 World in which letter he refers to and 

 criticises Mr. F. O. Harriman's article, 

 364, 365 ; letter of, 365, 366 ; Mr. Ro- 

 mero answers letter of, 367 



Harriman, J. P., letter in answer to Mr. 

 Romero's of September 25, 1893, 360 



Hatillo, rubber plantation at, 385 



