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 129
lat of theflame at will, while as much as possible of the unusedradiant is shaded from the eyes. The lamp, infigure 99, of Messrs. Watson and Son, perfectlyfulfils these conditions at a moderate cost. The same makers sell a more complete lamp,furnished with a silvered reflector, a condensinglens,… … ELECTRICAL ILLUMINATION. 109 2. Electrical Illumination.—In February, 1882,0 we publishedthe result of our researches on the use of electrical illumination. Since the month of November, 1S81, when we determined to employthe incandescent lamps, which had recently been invented, we have alwaysworked…
Microscopy
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