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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 244

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 244
eye; these require to be kept in vessels of considerabledimensions, which renders it difficult to select anyparticular specimen, as is also the case with the moreminute ones in phials. For effecting this purpose,Ledermuller has described and figured, in Plate 87of his work, a very ingenious… … Hold the tube by the upper end between thefingers, and close the orifice by the thumb (see theannexed figure) ; then immerse the lower end in thevessel of water, and the instant the insect desiredapproaches the tube, remove the thumb from theupper end, and the pressure of the atmosphere willforce…

Microscopy

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