Excerpt from The Microscope: Being the Article by Andrew RossIt exhibits, therefore, many of the usual test-objects in a very beautiful manner.The next step in the improvement of the simple microscope bears more analogy to the eye-piece. This improvement was made by Mr. Holland, and it consists (as shown in Fig. 6) in substituting two lenses for the first in the doublet, and retain ing the stop between them and the third. The first bending.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.

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