The microscope : its construction and management : including technique, photo-micrography, and the past and future of the microscope (1893)
Heurck, Henri van, 1838-1909 · London : C. Lockwood ; New York : D. Van Nostrand Co. · leaf 277
only necessary to replace theocular by a camera. Thus arranged, it is an instrument of extreme stability, and probablysuperior to any other combination. It is not affected by tremors, eitherfrom passing vehicles or from any other cause. We have had the curiosityto experiment with it by the side of… … Fig. 174. The only inconvenience is that projection oculars cannot be used withit. When this apparatus is used with apochromatic objectives, aconcave achromatic lens, which will make the focus of the objectivecoincide with the surface of the sensitive plate must be placed im-mediately above the…
Microscopy
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