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Updated: May 1, 2025
Most interesting of all, they coated bottle-shaped moulds, and when the gum had hardened they would break the mould, shaking the pieces out of the neck, leaving an unbreakable bottle that would hold liquids. Hevea is pronounced Hee'-vee-uh. Caoutchouc is pronounced koo'-chook.
Within its trim beds are contained tea and coffee plants, sugar-canes, caoutchouc and gutta-percha trees, Erythroxylon coca for cocaine, and trees producing tannin and oils. Various medicinal plants are also to be found here, and such as afford useful nourishment for cattle. The necessary labour for this garden is supplied by a head-gardener and seventy natives.
By distillation at 120° F. The vapour, as it passes along a glass tube, may be decomposed by heat into chlorine, hydrochloric acid, and carbon the first shown by setting free iodine in iodide of starch, the second by reddening blue litmus-paper, and the last by its deposit. Tests. Taste, colour, weight; burns with a green flame; dissolves camphor, guttapercha, and caoutchouc.
At Pevas, where there is a population of two hundred and sixty inhabitants, Benito would perhaps have done some trade with the lay brothers of the mission, who are at the same time wholesale merchants, but these had just sent away some bales of sarsaparilla and arrobas of caoutchouc toward the Lower Amazon, and their stores were empty.
The dapicho perhaps takes a long time to form; it is probably a juice thickened by a particular disposition of the vegetable organs, diffused and coagulated in a humid soil secluded from the contact of light; it is caoutchouc in a particular state, I may almost say an etiolated caoutchouc.
However, I think that our client might consent to the sum you mention." "Good. Well, directly I get his check, the thing's his. By the way, who is your client?" Mr. Harrison coughed. "His name," he said, "will be familiar to you. He is the eminent financier, Mr. Geoffrey Windlebird." The caoutchouc was drawing all London.
Tropical heat is required to form the caoutchouc; for when the tree is cultivated in hothouses, the substance of the sap is quite different. The full-grown trees are very handsome, with round column-like trunks about sixty feet high, and the crown of foliage is said to resemble that of the ash." "Did people always know about India-rubber?" asked Clara. "No indeed!
The long straps used in working machines are also made of gutta-percha, and this is another instance where its non-elasticity gives it the preference over India-rubber." "And what is vulcanite?" asked Clara. "It is caoutchouc mixed with sulphur.
The overseer of the farm told us that the negroes grow sensibly fatter during the season when the palo de vaca furnishes them with most milk. These membranes, separated from the rest of the more aqueous liquid, are elastic, almost like caoutchouc; but they undergo, in time, the same phenomena of putrefaction as gelatine.
Senhor Silva then explained to us, through Chickango, that he and his party had come from a considerable distance up the country, where they had gone to collect caoutchouc, or india-rubber, the packages of which lay piled up near the centre of the camp. They had collected it some distance up the country, where the vines which produce it grow in considerable quantities.
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