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The microscopic cabinet of select animated objects : with a description of the jewel and doublet microscope, test objects, &c. to which are subjoined, memoirs on the verification of microscopic phenomena, and an exact method of appreciating the quality of microscopes and engiscopes by C.R. Goring (1832)

Pritchard, Andrew, 1804-1882, Goring, C. R., 1792-1840, Kelsall, W.H., fl. 1834-1860, engraver ill · London : Whittaker, Treacher, and Arnot, Ave-Maria-Lane · leaf 46

An illustration from The microscopic cabinet of select animated objects : with a description of the jewel and doublet microscope, test objects, &c. to which are subjoined, memoirs on the verification of microscopic phenomena, and an exact method of appreciating the quality of microscopes and engiscopes by C.R. Goring, 1832, leaf 46
its natural position, is thrownback, and covered by the second plate, to which itis attached by a joint; it is convex, externally,but concave next the mouth, whereby the juices of itsprey are more easily conducted to it. In the following view the parts are thrown back, toshow the mouth and internal… … In the libellula depressa, instead of a pair of forci-pated jaws attached to the extremity of the secondplate, there is a pair of triangular plates, each pieceor plate being- attached by one of its angles, andforming a joint, which, when closed, permits the op- 40 MICROSCOPIC CABINET. posite sides…

Microscopy

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