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There seems to have been a mania for mixtures of tar and resins, their spirits and oils; my experience fails to show me any advantage for them on an iron bottom. They have neither elasticity nor durability, while linseed oil has both in a pre-eminent degree, and is no more likely to foul than they, when in a combination that does not dry hard.
Besides specimens of fruits, there is a comprehensive technical collection in the Botanical Museum fibres, commercial specimens of rattan, india-rubber, and gutta-percha, barks for tanning purposes, Peruvian barks, vegetable oils, indigo samples, various kinds of meal, resins and damars. There is also a section devoted to forest and staple produce.
Thus from the combinations of metals with acids, and from those combinations of animal fluids, which are termed secretions, this fluid matter of heat is given out amongst the neighbouring bodies; and in the solutions of salts in water, or of water in air, it is absorbed from the bodies, that surround them; whilst in its facility in passing through metallic bodies, and its difficulty in pervading resins and glass, it resembles the properties of the electric aura; and is like that excited by friction, and seems like that to gravitate amongst other bodies in its uncombined state, and to find its equilibrium.
True, in the august presence of rhombohedral crystals, retinasphaltic resins, gehlenites, Fassaites, molybdenites, tungstates of manganese, and titanite of zirconium, why, the most facile of tongues may make a slip now and then.
He painted in a truly religious spirit, and upon symmetrical principles, with great grandeur and freedom, resembling Michael Angelo more than any other modern artist. Like the Greeks, he painted with wax, resins, and in water colors, to which the proper consistency was given with gum and glue. The use of oil was unknown.
Because of certain fluids which the roots excrete from their slender extremities; and in this manner the likings and antipathies of certain plants may be accounted for. Thus, it is well known that the creeping thistle is hurtful to oats, erigeron acre to wheat, scabiosa arvensis to flax, &c. Why are some resins odorous?
Those that die are the elect Since the Gods have left the earth. Old men pass and young men come; Yea, a new Sun rises daily When the old sun has found rest In the bosom of the night. "Hail, O Prophet! on this feast day Odorous balsams, fragrant resins Here we bring and offer garlands, Throwing flowers down before thee, And before thy much-loved sister, Who has found her rest beside thee.
It must he admitted that the alchemists could cite many instances of transmutations which seemed to lead to the conclusion, that there is no difference of kind between the metals and other substances such as water, acids, oils, resins, and wood. We are able to-day to effect a vast number of transformations wherein one substance is exchanged for another, or made to take the place of another.
They could make it out of all those delicious gums and resins you read about in books on the Spice Islands, instead of by the by, what is glue made of?" "Horses' hoofs, I believe, but I fancy it's better not to ask what it's made of. I don't think your gums and resins would do the deed so well. We'd best stick to good old-fashioned glue."
Certain products are common to the whole vegetable series, but others, far less numerous, are prepared in special laboratories. Each genus, each species has its trade-mark. Here essential oils are manufactured; here alkaloids; here starches, fatty substances, resins, sugars, acids. Hence result special energies, which do not suit every herbivorous animal.
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