856. 
857. 
858. 
859. 
860. 
861. 
862. 
863. 
864. 
865. 
866. 
867. 
868. 
869. 
870. 
871. 
872. 
873. 
874. 
875. 
876. 
877. 
878. 
(39) 
Cup rubber.—Rubber that has been allowed to coagulate and form spon- 
taneously in the cups. 
Scrap rubber. The rubber which has formed upon the tree trunks and been 
scraped off into irregular masses. 
The same wound into a ball. 
Sap can.—The can used in carrying the milk from the forest to the smoking 
station. 
Another of the same, presented by John Lane Beck. 
Smoking furnace.—This furnace possesses only a very small opening at the 
base for the admission of air, so that the fuel, instead of blazing, emits a 
dense smoke at the top of the furnace. The rubber milk is exposed to the 
action of this smoke. 
Smoking nuts.—The nuts of the Mutucu Palm, a species of Attalea, which 
contain a large amount of fat and yield much smoke. 
Nuts of another species of Aittalea. 
Still another species, presented by John Lane Beck. 
Dipping can.—The can holding the milk into which the paddle is dipped. 
Smoking paddle.—This is a wooden paddle which is dipped into the milk 
and then held in the smoke, and upon which the mass of rubber is thus 
gradually formed. 
Dipping ladle.-—This a gourd ladle. After the mass of rubber on the paddle 
has become too large and heavy to be conveniently dipped, the milk is 
dipped up in this ladle and poured over the rubber mass, which is suspended 
in the smoke. 
Bolacho, or “biscuit,” of fine Para rubber, removed from the paddle by cutting 
a slit in the upper end. 
Another form of the same. 
Virgin rubber.—Rubber made from trees which have been tapped for the 
first time. The bolacho has been cut into pieces to ascertain that no 
adulterants have been introduced to it. 
Cake rubber.—Rubber which has been pressed into a flat cake. 
A coarse variety of Para rubber. Presented by the India Rubber World. 
A fine variety of the same. Same donor. 
Another specimen of the same.—Made from Hevea lutea Muell. Arg. Ac- 
quired at Achiquiri, on the Upper Mapiri River, by R. S. Williams, of the 
Garden Staff. ‘This is about the most western range of the Hevea. 
Fine Para rubber made in Bolivia. Presented by the India Rubber World. 
Native-made rubber shoe. Made by the Indians of southeastern Peru. 
Presented by John Lane Beck. 
Another specimen of the same.—These shoes are made by dipping a clay 
last into the rubber milk and smoking. Such shoes, made by the natives, 
were the first ones introduced to use by civilized man. Presented by the 
India Rubber World. 
Native-made rubber coat.—This coat is made by spreading a thin coating of 
rubber milk upon calico. Source unknown. 
