The microscope; an introduction to microscopic methods and to histology (1917)
Gage, Simon Henry, 1851-1944 · [Ithaca, N.Y.] The Comstock Pub. Co. · leaf 97
yand to pass it on to the two eyes through two parallel tubes, each withits own ocular. Later a satisfactory form was invented by Mr.Wenham of England in which there is but a single prism (fig. 52).Neither of these forms permitted of very high powers. Finally, in1864, Mr. Robert B. Tolles invented…
Microscopy · Microscopy -- Technique
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