The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope (1893)
Heurck, Henri van, 1838-1909 · London : C. Lockwood ; New York : D. Van Nostrand Co. · leaf 132
jointed arm E allows it to be withdrawnfrom or brought near to the object for the purposes of illumination. The second lamp B is placed on the sub-stage ; by sliding it in agroove it can be pushed sideways so as to give oblique illumination. Lastly, the third lamp C, whose illuminating power is…
Microscopy
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