. Carnegie Institution of Washington publication. Echinoderm Hybridization. 125 studies (Zellen-Studien 5 and 6), and it is on the basis of this interpre- tation that the more recent work of Herbst, Baltzer, and others is founded. The beginning of a second phase of work in Echinoderm hybridiza- tion was marked by the appearance of Vernon's papers. As a preparation for his work on hybridization, Vernon (1895) made a careful study of the effect of environment on the development of Echinoderm larvae, using Strongylocentrotus lividus as the subject of his research. As means of changing the environ
. Carnegie Institution of Washington publication. Echinoderm Hybridization. 125 studies (Zellen-Studien 5 and 6), and it is on the basis of this interpre- tation that the more recent work of Herbst, Baltzer, and others is founded. The beginning of a second phase of work in Echinoderm hybridiza- tion was marked by the appearance of Vernon's papers. As a preparation for his work on hybridization, Vernon (1895) made a careful study of the effect of environment on the development of Echinoderm larvae, using Strongylocentrotus lividus as the subject of his research. As means of changing the environment he used (i) Differences in temperature, (2) Differences in concentration of sea-water, (3) Differences in light, (4) Chemical agents. Strongylocentrotus eggs were placed in water of 8° or 25° C. for an hour, or even for a minute, at the time of impregnation. After 8 days the resulting plutei were per cent smaller than those from eggs. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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