stead of the ordinary glass chimney one madeof metal with a slit-like opening covered with an oblong cover-glass ismore satisfactory, as the source of light is more restricted. Very ex-cellent results may be obtained, however, with the ordinary bed-roomlamp furnished with the usual glass chimney.… … FlG. 52. 1. Lamp with slit-opening in metal chimney. 2. Bulls eye on separatestand. 3. Screen showing image of flame. Whenever possible, the edge of the flame is turned toward the micro-scope, the advantage of this arrangement is the greater brilliancy, dueto the greater thickness of the flame in…
Microscopy
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