. The microscope : an introduction to microscopic methods and to histology. Microscopes. PHOTO-MICROGRAPHY [C/J. I'll I modern achromatic objectives were found to give excellent results when used without an ocular. Most of them also gave good results with projection oculars. It must be said however, that the best results were obtained with the apochromatic objectives and projection oculars. It does not seem to require. Fig. 171. — Vertical photo-micrgraphic cam- era, screen and small table The table is about 45 cen- timeters high and in the legs are large screw eyes for leveling screws. The op
. The microscope : an introduction to microscopic methods and to histology. Microscopes. PHOTO-MICROGRAPHY [C/J. I'll I modern achromatic objectives were found to give excellent results when used without an ocular. Most of them also gave good results with projection oculars. It must be said however, that the best results were obtained with the apochromatic objectives and projection oculars. It does not seem to require. Fig. 171. — Vertical photo-micrgraphic cam- era, screen and small table The table is about 45 cen- timeters high and in the legs are large screw eyes for leveling screws. The operator can stand on the floor and perform all the necessary operations, and in adjusting the micro- scope can sit on a low stool. The screen is of zinc and has two heavy lead feet to hold it steady. Near the lower left hand corner of the screen is an aperture for the light to shine through upon the mirror. This opening is closed by a black slide "which is just balanced so that it stays in any posi- tion. In making the ex- posure it is raised suffi- ciently to admit the light to the mirror, but the stage is left in shadozo. This screen shades the microscope and the face of the operator. (Trans. Amer. Micr. Soc. 1901.) so much skill to get good results with apochromatics as with achromatic ob- jectives. The majority of photo-micrographers do not use the Huygenian oculars in photography, although excellent results have been obtained with them. An amplifier is sometimes used in place of an ocular. Considerable experience is necessary in getting the proper mutual position of objective and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gage, Simon Henry, 1851-1944. Ithaca, N. Y. : Comstock Publishing Company
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