Beck, Conrad, 1864- · London, R. & J. Beck, Ltd. · leaf 31
Fig. 17. Fig. 18. 28 THE MICROSCOPE Lmnersionac^omaticcondenser. Use of aBubstagecondenser. To focus a substage condenser. <i*^ … Fig. 19.—No. 3291, Dry andImmersion Condenser. illiiroinated by a hollow cone. Stops or patch-stops with aperturesof difierent shapes, or in difierent positions below the condenser,used in combination with the iris diaphragm, regulate the illumina-tion so that light in any direction may be passed…
Microscopy
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