Micrographia : containing practical essays on reflecting, solar, oxy-hydrogen gas microscopes; micrometers; eye-pieces, &c. &c. (1837)
Goring, C. R., 1792-1840, Pritchard, Andrew, 1804-1882, joint author · London : Whitaker and Co. · leaf 219
e centre of which must becut an aperture suitable for the reception of the instrument:thus all the light will be excluded but that which is to passthrough the instrument and illuminate the screen. If, however,the shutter be furnished with an additional opening, which maybe readily closed when… … microscope :—A, a side view of a square metal plate, which isto be firmly fixed to a window shutter ; IJ, the tube containingthe condensing lens : between this lens and the plate, A, is anaperture for the admission of large phantasmagoria and otherslides ; near the end of the tube is attached a…
Microscopy
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