And all because a perfectly respectful admiration for the caoutchouc had led him to occupy a stage-box several nights in succession at the theater where the peerless Maraquita tied herself into knots.
In forming, he placed two sheets of lead in sulphuric acid, separating them by narrow strips of caoutchouc (fig.
A good and striking experiment, displaying the change from the liquid to the vapour state, is shown by tying a piece of sheet caoutchouc over a tin vessel containing an ounce or two of water.
Illustration: Tube A is joined to tube B by the caoutchoucpipe C, tied with packthread.
In order to prevent any deposit of water, the bulb is blown out, whilst red-hot, with the air from a small caoutchouc bag fitted on to the other extremity of the tube.
There are numerous other trees, both in the Old and New World, most of them belonging to the famed family of the figs, which in some degree afford the caoutchouc of commerce.
Guided by the Mundurucu, the swimmers entered the water arcade before described, and proceeded on to the tree that had furnished the caoutchouc for their swimming-belts.
The collectors have already provided themselves with moulds of many kinds, according to the shape they wish the caoutchouc to assume, such as shoes, round balls, bottles with long necks, and the like.
The caoutchouc is collected in the simplest way, which affords a regular business to many Amazonians, chiefly native Indians, who dispose of it to the Portuguese or Brazilian traders.
Some specimens ofcaoutchouc are harder than gutta percha itself, and equally inelastic, whilst others never perfectly solidify, but remain in a condition resembling that of birdlime or printers' varnish.
Ordinary glue is dissolved in nitric ether, and a little bit of caoutchouc added.
The fats and fixed oils also readily dissolve caoutchouc (with heat), forming permanently glutinous solutions or pastes; so also do most of the volatile oils, but the solutions with the majority of them dry with difficulty.
The others have a disagreeable odour, but are much cheaper than the rest, and possess the advantage of leaving the film of caoutchouc in a firmer and stronger condition than other solvents.
The discovery of the singular action of sulphur and the mineral sulphides on caoutchouc was made by Mr Charles Goodyear, of New York, in 1842, at which date the manufacture of vulcanised india rubber may be said to have commenced.
During the process of kneading the raw caoutchouc in the "masticators," the cold water thrown in to reduce the temperature soon becomes boiling hot.
A sheet of caoutchouc immersed in melted sulphur absorbs a portion of it, and at the same time undergoes important changes in many of its leading characteristics.
In fact, it is the exclusive property of vulcanised caoutchouc to be able to retain any form impressed upon it, and to return to that form on the removal of any disturbing force which has been brought to act upon it.
Dr Rollfs advises melting a piece of caoutchoucat the end of a wire, and introducing it while warm.
In the early feeding-bottles constructed upon this model by O'Connel, the glass pipe passed from within the bottle through the cap, and was attached outside this to the caoutchouc tube.
It contains the peculiar principles of the plants, whether aromatic, bitter, or acid, and in many instances yields caoutchouc upon coagulation.
A material for carpeting or floor covering, made of ground cork and caoutchouc or India rubber.
An oily, volatile hydrocarbon, obtained by the distillation of caoutchouc or guttaipercha.
A caoutchouc like substance obtained from the milky juice of the East Indian Euphorbia Kattimundoo.
Caoutchouc was described for the first time in 1736, by the scientific travellers Bouguer and La Condamine, members of a Commission despatched to Peru by the Parisian "Academie des Sciences," to measure an arc of the meridian.
A few years later, the engineer Fresneau, who resided for a long time in Guiana, collected, with the assistance of a native, ample information in reference to caoutchouc and the tree which produced it.
On issuing, it is of a very rich pure white; if good, of the consistence of cream: its excellence is known by the degree of consistence, and by the quantity of caoutchouc it contains.
Returned from Jeypore, whither I had been to report on the Caoutchouc trees.
The steam is introduced by means of a caoutchouc pipe, and when brought to the boil the pipe is removed.
Caoutchouc and gutta-percha manufactured in any shape or into any kind of article not specially mentioned, T.
Caoutchouc and gutta-percha, raw or melted in lumps, G.
It is le Colonel Caoutchouc here, le Colonel Caoutchouc there; till one begins to ask, at last, IS there any Colonel Caoutchouc, or is it a convenient class name invented by the Force to cover a gang of undiscovered sharpers?
I am surprised that some chemists consider the black caoutchouc of commerce, as being mixed with soot, blackened by the smoke to which it has been exposed.
Without cultivating trees with a milky sap, a sufficient quantity ofcaoutchouc might be collected in the missions of the Orinoco alone for the consumption of civilized Europe.
This use of caoutchouc appeared to us the more worthy notice, as we had been often embarrassed by the want of European corks.
Both of these nations are celebrated among all the tribes of the Orinoco and the Amazon for their employment of caoutchouc in the manufacture of various articles of utility.
Gay-Lussac, the caoutchouc as the oily part--the butter of vegetable milk.
A vegetable milk becomes nourishing when it is destitute of acrid and narcotic principles; and abounds less in caoutchouc than in caseous matter.
We have already mentioned that the caoutchouc is the oily part, the butter of all vegetable milk.
The bark and alburnum crack; and thus is effected naturally, what the art of man performs for the purpose of collecting the milky juices of the hevea, the castilloa, and the caoutchouc fig-tree.
All these incisions conduct the milky juice towards one point, where the vase of clay is placed, in which the caoutchouc is to be deposited.
On comparing the milky juices of the papaw, the cow-tree, and the hevea, there appears a striking analogy between the juices which abound in caseous matter, and those in which caoutchouc prevails.
Acids precipitate the caoutchouc from the milky juice of the euphorbiums, fig-trees, and hevea; they precipitate the caseum from the milk of animals.
It is, no doubt, a particular modification of caoutchouc that forms this coagulum, this white and glossy skin, that seems as if covered with copal varnish.
Etiquette would not allow them to speak; but in the Caoutchouc City it is permitted to gaze without stint at the trees in the parks and at the physical blemishes of a fellow creature.
People who leave the scene of an accident with the ambulance have not genuine caoutchouc in the cosmogony of their necks.
Layer after layer of caoutchouc I brushed over it, allowing each layer to dry before the next was put on, until at length I considered that the shoes were of sufficient thickness.
Fritz and Jack were therefore dispatched to collect some fresh caoutchouc from the trees, and as this involved a good gallop on Storm and Lightfoot, they, nothing loth, set off.
To the caoutchouc tree we directed our steps, and were soon busily engaged in stabbing the bark and placing vessels beneath to catch the sap.
Now for thecaoutchouc tree," said I; "now for the waterproof boots and leggings to keep your feet dry, Ernest.
Fritz and Jack were therefore dispatched to collect some fresh caoutchouc from the trees, and as this involved a good gallop on Storm and Lightfoot, they nothing loth set off.
Now for the caoutchouc tree,' said I, `now for waterproof boots and leggings to keep your feet dry, Ernest.
The tough, adhesive mixture of caoutchouc oil and turpentine turned out well.
It is Jack," we exclaimed; and in fact it was he, who was hurrying to meet us with my large cloak and waterproof caoutchouc boots.
We did not find more than a quart of the caoutchouc gum; but it would be sufficient for our first experiment, and I carried it off.
The leaves are used for tanning, and afford lac, and a gum resembling caoutchouc is obtained from the juice; but in India it is chiefly planted with a religious object, being regarded as sacred by both Brahmans and Buddhists.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "caoutchouc" in a variety of sentences. We hope that you will now be able to make sentences using this word.
