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 137
iphon (fig. 109). This siphon has an advantage over all othersbecause it is set in operation by blowing and notby suction; it is emptied in the same way. Thesetwo operations are effected by means of an india-rubber ball. To fill, it is sufficient to press the ball slowlyonce or twice; to empty, it… … ELECTRICAL ILLUMINATION. 117 smaller than that of its average section. It follows then that whenair is blown in slowly the pressure increases in the large tube, drivesback the liquid into the straight branch, and the siphon is found tobe full. A rapid pressure on the other hand drives back the…
Microscopy
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