. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NADIR ZENITH LUNAR DAY NADIR FIGURE 4. The drift through the lunar-day of the effectiveness of the experimental E-W relative to the N-S field in altering mean path from the control one. Points are calculated from three-hour grouped data. field occurs one to two hours after lunar zenith. There is also a suggestion that this bimodal lunar-day, or lunar-tidal, fluctuation in the relative effects of the two magnetic fields possesses still a further, and lesser, harmonic to give a quadri-modal lunar-day cycle. It was shown earlie
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NADIR ZENITH LUNAR DAY NADIR FIGURE 4. The drift through the lunar-day of the effectiveness of the experimental E-W relative to the N-S field in altering mean path from the control one. Points are calculated from three-hour grouped data. field occurs one to two hours after lunar zenith. There is also a suggestion that this bimodal lunar-day, or lunar-tidal, fluctuation in the relative effects of the two magnetic fields possesses still a further, and lesser, harmonic to give a quadri-modal lunar-day cycle. It was shown earlier (Brown, Webb and Brett, 1960) that there was, during the two-month period of study, a semi-monthly cycle of direction and degree of turning of the snails induced by the magnets with maximum clockwise turning a day or two before new and full moon, and maximum counterclockwise turning just before the times of first and third quarters of the moon. When now the actions of the two experimental magnetic fields were compared for their contribu- tion to this semi-monthly rhythm, it was found that the two magnetic orientations. 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
