. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 J. ARTHUR HARRIS. macro- and the number of microsporophylls from their probable value are the coefficients of critical value. These are also given in Table III. The correlations for stamens and pistils are necessarily equal in magnitude but opposite in sign. They show that the number of pistils is relatively larger in the flowers with larger numbers of sporophylls. The results are consistent in sign throughout. All of the correlations except that for the series from Trogen may be considered certainly significant in compar
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 J. ARTHUR HARRIS. macro- and the number of microsporophylls from their probable value are the coefficients of critical value. These are also given in Table III. The correlations for stamens and pistils are necessarily equal in magnitude but opposite in sign. They show that the number of pistils is relatively larger in the flowers with larger numbers of sporophylls. The results are consistent in sign throughout. All of the correlations except that for the series from Trogen may be considered certainly significant in comparison with their probable errors. While the constants for certain of the series differ significantly, the results are (considering the relatively small numbers and the very wide geographical distribution of the material) very con- sistent. Five of the eight series differ from r = ± .50 by less than twice their probable error. Of the other three series, only Professor Ludwig's Trogen material is very aberrant. For two of the series I have determined the standard devia- P/s7//s /2 /6 /8 20 22 24 26 28 30 32 34 3ff 38 40 42 44- 46 48. FIG. 2. Empirical means and regression straight lines for regression of stamens on pistils and pistils on stamens. Guernsey 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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