. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 374 F. A. BROWN, JR. AND C. S. CHOW. B U 20 ~ Z O 18 - .4 12 - i i i i i I i i i i I I i i i i I 10 12 14 16 18 20 22 24 26 CW MAGNET 22 - g,.: O - <,e- 0,4- 12 - I i l i l i i l i i i 14 16 18 20 22 24 CCW MAGNET Fi(;ri<E 2. A) The three conditions concurrently operating in the second experiment. Small circles on the larger tables indicate plastic dishes (9 cm in diameter) each containing 20 beans in aluminum screen trays. B) Scatterplots show relationships between day-to-day percentage values for clockwise and counte
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 374 F. A. BROWN, JR. AND C. S. CHOW. B U 20 ~ Z O 18 - .4 12 - i i i i i I i i i i I I i i i i I 10 12 14 16 18 20 22 24 26 CW MAGNET 22 - g,.: O - <,e- 0,4- 12 - I i l i l i i l i i i 14 16 18 20 22 24 CCW MAGNET Fi(;ri<E 2. A) The three conditions concurrently operating in the second experiment. Small circles on the larger tables indicate plastic dishes (9 cm in diameter) each containing 20 beans in aluminum screen trays. B) Scatterplots show relationships between day-to-day percentage values for clockwise and counterclockwise tables relative to the common controls. alternated between the two rotating tables and two rotating magnets on consecu- tive days to compensate for any position effect. On fifty days, five clays a week between June 17 and August 23, 1974, experi- ments including both rotating tables and rotating magnets (both, 1 rpm) were performed. There were four pairs of vessels distributed around the edge on each table. There was also a comparable control table, non-rotating and without a magnet. The clay-by-day data were converted to deviations from the daily means of all sixty vessels of beans being measured concurrently in four experiments in the room because of relatively substantial systematic variations occurring in water uptake rates over the summer. When the means for the control and clockwise rotating tables were correlated (with one of the 50 points which was widely discontinuous with the mass of points, omitted), the clockwise table gave a very low negative value, r — — (Figure 3A), while the counterclockwise table yielded a statistically highly signifi- cant negative value, r- — (Figure 3B). After transforming these to .cr's, the difference between them was found to be ± , P < Now, doing the same for the rotating magnet series, counterclockwise magnet rotations (Figure 3C) gave a positive but statistically insignificant value, r -.
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
