. The microscope; an introduction to microscopic methods and to histology. Microscopes. 72 DARK GROUND ILLUMINATION WITH HIGH POWERS CCh. II § 126. Experiments with high powers and dark field. — Put the special dark-ground illuminator (fig. 50) in place of the condenser. Fig. 49. Small Arc Lamp and Connections. (From Optic Projection). A Small arc lamp base with right-angle carbons (HC, VC) with insulation (In. In). The arc and the condenser (C) are in position to give a parallel beam. Ch Chimney over the arc, T, tube holding the condenser; sh, metal shield at the end of the condenser tube. W
![. The microscope; an introduction to microscopic methods and to histology. Microscopes. 72 DARK GROUND ILLUMINATION WITH HIGH POWERS CCh. II § 126. Experiments with high powers and dark field. — Put the special dark-ground illuminator (fig. 50) in place of the condenser. Fig. 49. Small Arc Lamp and Connections. (From Optic Projection). A Small arc lamp base with right-angle carbons (HC, VC) with insulation (In. In). The arc and the condenser (C) are in position to give a parallel beam. Ch Chimney over the arc, T, tube holding the condenser; sh, metal shield at the end of the condenser tube. W Stock Photo](https://c8.alamy.com/comp/RE2JDG/the-microscope-an-introduction-to-microscopic-methods-and-to-histology-microscopes-72-dark-ground-illumination-with-high-powers-cch-ii-126-experiments-with-high-powers-and-dark-field-put-the-special-dark-ground-illuminator-fig-50-in-place-of-the-condenser-fig-49-small-arc-lamp-and-connections-from-optic-projection-a-small-arc-lamp-base-with-right-angle-carbons-hc-vc-with-insulation-in-in-the-arc-and-the-condenser-c-are-in-position-to-give-a-parallel-beam-ch-chimney-over-the-arc-t-tube-holding-the-condenser-sh-metal-shield-at-the-end-of-the-condenser-tube-w-RE2JDG.jpg)
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. The microscope; an introduction to microscopic methods and to histology. Microscopes. 72 DARK GROUND ILLUMINATION WITH HIGH POWERS CCh. II § 126. Experiments with high powers and dark field. — Put the special dark-ground illuminator (fig. 50) in place of the condenser. Fig. 49. Small Arc Lamp and Connections. (From Optic Projection). A Small arc lamp base with right-angle carbons (HC, VC) with insulation (In. In). The arc and the condenser (C) are in position to give a parallel beam. Ch Chimney over the arc, T, tube holding the condenser; sh, metal shield at the end of the condenser tube. W I Wire cable to the lamp socket (So) with its key switch (K). Sp Separable plug. W 2, W 3 Wire to the upper or horizontal carbon (H C). W 4 Wire to the rheostat (R) and to the lower or vertical carbon (V C). C Tips of carbons for alternating current. D Tips of carbons for direct current, the positive pole always being on the horizontal carbon (+), and the negative pole on the lower or vertical car- bon (-). E Shield at the end of the condenser tube; the face of the condenser is shown at (C). ordinarily used. Push it upward in the sleeve so that it can be brought by the screw flush with the upper surface of the stage. Use a 16 mm.. 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 work.. Gage, Simon Henry, 1851-1944. [Ithaca, N. Y. The Comstock publishing company