The art of manufacturing

The art of manufacturing
The art of manufacturing shells is natural to the snail, as well as other testaceous animals.tiffany outlet
tiffany jewelry outlet
tiffany on sale
tiffany's outlet
True Religion Outlet

For this purpose, its whole body is furnished with glands, from the orisices of which exsudes a kind of limy fluid, which unites in one common crust or surface, and in time acquires a stony hardness. That glistening substance, in fact, which the snail so True Religion Jeans Outlet frequently True Religion Jeans Outlet leaves behind it, is, in reality, the: matter with which the animal either augments its fiiell, or repairs its defects. Thus every shell may be consideredas a compositiun of layers of lime, originally proceeding from the creatures own body, and moulded conformably to its hape and various exigencies. But, though the actual formation of liells riiav be thus accounted for, they probably receive their beautiful tints from some extraneous causes. It is well known that all the internal parts of shelis are of one uniform white colour; and that it is only the outermost layer that is so beautifully varied, and so richly tinctured wu vivid colours. Hence it appears, that there stem.: Teldcta. accretion of earthy or saline matter arising from food ot situation, exclusive of the slimy fluid derived from the animals own body, to produce those pleasing tints which we witness in cabinets of shells, collected by the curious. In those repositories, which are sometimes formed at an astonishing expence, we sind shells possessing every shade of colouring except blue; the reason of this tiffany jewelry outlet is, that seawater immediately annihilates that colour, while it suffers others to exist. Put a piece of blue silk, or a feather of this,colour, into an infusion of salt, urine, or nitre, and its tint will be soon extinguished. May not this throw some I ght on the operations of nature in regatd to shells Neither the animal shme alone, nor the external earthy or saline particles, individually, could produce colours; but both united may yield an effect which neither, singly, possessed. Hence we may infer that the animal alone does not tincture its shell; but that external causes cooperate in adding to its beauty. But, though the shell tiffany outlet with its beautisul tints is not produced by the sole agency of the animal, the fact is otherwise with regard to its convolutions, its prominences, and jts general forms. These entirely depend on the art of the animal, or rather on the instincts, which in the fame species are ever invariable. The shell, indeed, always bears some rude resemblance to the body in which tiffany's outlet it has been moulded: wherever tiffany on sale there is an excrescence on the body,