. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 476 F. R. HUNTER AND ORLANDO DE LUQUE LJ D O » 0,55 FIGURE 3. Volume changes of ovarian eggs of Hyla (with follicular layers) when placed in solutions of KCl of different concentrations. Measurements made after one hour. to study all of the aspects of a problem such as this at one time, it seems best to use the material, heterogeneous as it may be, and see what general information can first be obtained. Ovarian eggs of Bufo (with follicular layers) have a water content of 50 ± 10%, X 10"5 m
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 476 F. R. HUNTER AND ORLANDO DE LUQUE LJ D O » 0,55 FIGURE 3. Volume changes of ovarian eggs of Hyla (with follicular layers) when placed in solutions of KCl of different concentrations. Measurements made after one hour. to study all of the aspects of a problem such as this at one time, it seems best to use the material, heterogeneous as it may be, and see what general information can first be obtained. Ovarian eggs of Bufo (with follicular layers) have a water content of 50 ± 10%, X 10"5 milliequivalents of Na per mg. dry weight and X 10~5 milli- equivalents of K per mg. dry weight. From Table II, using the data from Bufo 2 and 3 we obtain the values of 52% water and mg. of water per egg. The dry weight of each egg, then, is mg. Multiplying this weight by the values for Na and K we see that each egg contains X 10~5 milliequivalents of Na and X 10~D milliequivalents of K. Knowing the quantity of water in each egg we can calculate the sum of the milliequivalents of these two cations in one liter of egg water. With the above data, this has the value of 140. That is to say, con- TABLE X Changes in water content of ovarian eggs of Hyla labialis placed in solutions of KCl of different osmotic pressures Control KCl KCl KCl KCl KCl Hyla no. % % % % % % 1 48 60 60 60 60 63 2 48 69 70 70 73 73 3 58 70 73 73 73 74 Average 51 66 68 68 69 70 Average (rela- tive) 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
Size: 1822px × 1371px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
