The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 66
actorylight. It is recommended that instead of the ordinary glass chimney, CH. //] LIGHTING AND FOCUSING 51 one made of metal with a slit-opening covered with an oblong cover-glass is more satisfactory, as the source of light is more restricted.Very excellent results may be obtained, however, with… … Fig. 53. 1. Lamp with slit-opening in metal chimney,separate stand. 3. Screen showing image of flame. 2. Bulls eye on Whenever possible the edge of the flame is turned toward themicroscope, the advantage of this arrangement is the great brilliancy,due to the greater thickness of the flame in this…
Microscopy
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