Wood, J. G. (John George), 1827-1889, West, Tuffen, Knapp, Arthur M., former owner · London ; New York : Routledge, Warne, and Routledge · leaf 36
he other, whichdraw out in telescopic fashion, so that the bulls-eye lens can be raised to any onvenient height. Some littlepractice is required to use this instrument properly,but when rightly managed it is quite invaluable,bringing out effects which would otherwise be totally CONDENSER. 25… … CONDENSER. light is concentrated in so small a space that when itis refracted from hairs, feathers, or scales, especially thewing-scales of several insects, the whole field of themicrpscope seems to be filled with resplendent gems,flashing with a radiance that is almost painful in itsintensity. 26…
Microscopy
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