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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 201

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 201
o 194 MICROSCOPIC CABINET. be in the same state, and there will be the same de-gree of brightness and intensity of light, both withinand without the focus, at any two given points, as Cand C, equidistant from the focus either way *. 3dly. Imperfect metals and object-glasses have theiroutside rays… … * The reader must not suppose that I mean to assert that there isuot exactly the same quantity of light at any point taken from theobject-glass or metal, &c to an infinite distance from it, under everypossible circumstance, both of aberration and of freedom from it.What is asserted relates only…

Microscopy

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