. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 340 GEORGE W. BARTELMEZ. and the chalazal axis but the axis angle is usually greater than he believed. We cannot be more specific concerning the axis angle in the pigeon than to say that in the great majority of eggs 50 -. 30 - 10 - 20° 30* 50° 70" 90" 110" 135 FIG. 2. Curve of variability in axis angles plotted from observations on 506 eggs from 90 different birds. The angles could be measured accurately to 5°. The eggs were grouped in 10° classes and the number of cases in each class plotted as ordinates, th
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 340 GEORGE W. BARTELMEZ. and the chalazal axis but the axis angle is usually greater than he believed. We cannot be more specific concerning the axis angle in the pigeon than to say that in the great majority of eggs 50 -. 30 - 10 - 20° 30* 50° 70" 90" 110" 135 FIG. 2. Curve of variability in axis angles plotted from observations on 506 eggs from 90 different birds. The angles could be measured accurately to 5°. The eggs were grouped in 10° classes and the number of cases in each class plotted as ordinates, the angles as abscissae. The resemblance to a symmetrical curve of normal variability is apparent. the head of the embryo lies in the second octant of the (animal) polar hemisphere. THE Axis ANGLES OF INDIVIDUAL BIRDS. My previously published data indicated that the eggs of a given bird show less variation in axis angles than do the eggs of different birds. The following birds were studied for four years, certain of their young mated and their eggs likewise observed. All the birds were the mongrel "homers" of the dealers. The original pairs were given me by Professor Whitman in 1910. They had the freedom of a large attic room where they were free from disturbance, could choose their mates, build their nests and keep comparatively happy throughout the year. At the time I thought there might be some relation between sex. 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
Size: 1783px × 1402px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
