The microscope; an introduction to microscopic methods and to histology (1899)
Gage, Simon Henry, 1851-1944 · Ithaca, N. Y., Comstock publishing company · leaf 68
rection of apparent movement in focusing down with referenceto the illuminating ray ? What in focusing up ? If one understandsthis experiment it may sometimes save a great deal of confusion. (Seeunder testing the microscope for swaying with central light § 104). CH. //.] LIGHTING AND FOCUSING 47 §… … °h-AU
Microscopy -- Technique
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