. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESPONSE TO WEAK MAGNETIC FIELD 277 RESPONSE OF PARAMECIUM TO A FIELD It was of interest to learn whether a single-celled form exhibited such orienta- tional responses. Paramecium caitdatnm was permitted to escape from the exit of a magnetic-South-directed, minute, funnel-shaped, aluminum corral set in the center of a 3!f-inch round Petri dish containing water 2 mm. deep. The corral exit was carefully entered over the origin of a polar coordinate paper grid (Fig. 9A). The grid was, in turn, set on the platform of a
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESPONSE TO WEAK MAGNETIC FIELD 277 RESPONSE OF PARAMECIUM TO A FIELD It was of interest to learn whether a single-celled form exhibited such orienta- tional responses. Paramecium caitdatnm was permitted to escape from the exit of a magnetic-South-directed, minute, funnel-shaped, aluminum corral set in the center of a 3!f-inch round Petri dish containing water 2 mm. deep. The corral exit was carefully entered over the origin of a polar coordinate paper grid (Fig. 9A). The grid was, in turn, set on the platform of a stereoscopic microscope and illuminated weakly from below by a 7 \ -watt incandescent lamp with opalescent glass. Between the lamp and the microscope platform was a water filter for heat absorption, and an opaque screen with a circular opening carefully centered under the corral exit. The whole apparatus was placed in a darkened enclosure. With this arrangement, the emerging paramecia were clearly silhouetted for observation. A. -WITH MAGNET -WITHOUT MAGNET. 400- 300- O UJ O LJ Q. 0 0 * 0 ° •n 0 + t , O 8 0 0 D o • • o • - 0 0 • V D *0 "0 '0 I 200 100. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
