Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 168
a slightly convex lens in the positionshown in the figure, between the eye and the paper, in order thatthe rays from the paper and tracing-point may diverge at the sameangle as those which are received from the prism ; and it may begenerally got over altogether, by experimentally modifying… … Microscope arranged with Camera Lucida, for Drawing or Micrometry. may be allowed to come from the object, or more light (as by ataper held near) may be thrown on the paper and tracing-point.Sometimes, on the other hand, measures of the contrary kind mustbe taken.—Another instrument for the same…
Microscopy · Biology
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![An illustration from Original microscopic drawings made between the years 1824 and 1840 mostly published in works by Dr. Goring & A. Pritchard [graphic]. (1824)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b21301177-33-1.webp)
