. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. PHOTOGRAPHY AND PHOTOMICROGRAPHY. 145 on the ground glass as for any picture, reniembering that a wide margin ('< inch or more) must be left for binding strips, and that if the negative has any up and down Its image nuist l)e placed crosswise on the lantern-slide. The writer focuses as. 129.' *FiG. 129.—The modified Collins-Brown camera used with tripod for natural-size pictures. Heavy shadows are dissipated by using the glass plate. The size of the camera box is 1014 by 1254 by 5-}4 inches, and its weight, including le
. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. PHOTOGRAPHY AND PHOTOMICROGRAPHY. 145 on the ground glass as for any picture, reniembering that a wide margin ('< inch or more) must be left for binding strips, and that if the negative has any up and down Its image nuist l)e placed crosswise on the lantern-slide. The writer focuses as. 129.' *FiG. 129.—The modified Collins-Brown camera used with tripod for natural-size pictures. Heavy shadows are dissipated by using the glass plate. The size of the camera box is 1014 by 1254 by 5-}4 inches, and its weight, including lens and shutter, is about 15 pounds, or with tripod 19 pounds. The camera takes a 6^ by 854 plate. It is solidly constructed, of the very best workman- ship, and the only objection is its weight, which is no disadvantage in laboratory use. It is not recommended for field 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 Smith, Erwin F. (Erwin Frink), 1854-1927. Washington, D. C. , Carnegie Institution of Washington
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