Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 170
, will be found in the chapter onobjectives. We can here only attempt, for the sake of completeness,a very broad outline of the facts. Martin appears to have constructed an achromatic objective in1759, but no results of practical value were obtained, Martin havingformed the judgment that his… … Fig. 110.—Elliss aquatic microscope (1755L In 1762 Euler began to discuss the theory of achromaticmicroscopes, and in 1771, in his Dioptrica, he entered upon thesubject at more considerable length. A pupil of his, named NicholasFuss, published in St. Petersburg, in 1774, a volume entitled…
Microscopy
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