Excerpt from A Treatise on the Construction, Proper Use, and Capabilities of Smith, Beck, and Beck's Achromatic MicroscopesThe publication has been much delayed by various causes which it is unnecessary to explain at length. F It may, however, be mentioned that a considerable amount of matter is now included in the work, which it could not have contained at a much earlier issue, such, for instance, as a description of Wenham' s Binocular Body, the third class Popular Microscope, and several new pieces of apparatus.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition.

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