(40) 
Artificially Coagulated and Pressed Rubber 
879.17 Pressed cake rubber. Leaf or sheet rubber. Presented by Carlos Manuel 
Asensi. 
880. The same from Matto Grosso, Brazil. 
881. Sheet rubber. Made on the Culleden estate at Kalutera, Ceylon. 
882. The same from the Arapolakande estate at the same place. 
883. The same from the Selangor rubber estate at Selangor, Federated Malay 
States. 
884. Another specimen of the same, washed and sheeted. 
885. Worm rubber.—Rubber made to take a peculiar form, in the East Indies. 
886. Sheet rubber from Singapore. 
887. The same, made in the Botanical Gardens at Penang, East Indies. 
888. Crepe rubber.—Rubber made in a peculiar form, in the East Indies. 
889-893. Illustrating rubber plasters and their manufacture, for medicinal use. 
Presented by Seabury & Johnson, of New York. 
890. A biscuit of the finest Para rubber. 
891. The same ground and purified, ready for making into sheets. 
892. The same rolled into sheets. 
893-900. Samples of rubber base plasters, showing back and front sides. 
893. A porous plaster. 
894. A heart-shaped cough plaster. 
895. Improved kidney plaster. 
896. Breast plasters. 
897. Plaster of extra size. 
898-899. Adhesive plaster, in rolls. 
goo. Double adhesive plaster. 
goi-go4. The manufacture of rubber marking stamps. Presented by Abram 
Aarons, of New York City. 
gor. Sheet of unvulcanized fine Para rubber. 
go2z. The same vulcanized. 
g03. Sponge rubber. The preceding, made porous by a special process. 
904. Rubber stamps made from the preceding. 
gos5—906. Stages in the manufacture of hard rubber fountain pens. Presented 
by the L. E. Waterman Co., of New York City. 
907-913. The genus Micrandra, comprising plants of Venezuela, which yield 
a poor quality of rubber. The specimens are from Alto Coura, Venezuela, 
and were presented by F. B. Richard. 
907. Picture of a tree trunk of Micrandra sp., from which the milky juice is col- 
lected. 
908. Flowering branch of same. 
gog. Fruiting branch of same. 
gio. Leaves of the same preserved in formaldehyde solution. 
git. Fruit of same. 
g12. Bark of same, preserved in formaldehyde solution. 
913. Specimen of rubber made from the same. 
17 Numbers 879-888, unless otherwise stated, were presented by the India 
Rubber World. 
