Experiments on the Eggs of Sargassum

Abstract

1. By the treatment of the eggs of Sargassum in their 8-nucleate stage by sea-water containing certain amounts of KCl, the seven egg-nuclei which are destined to degenerate may be activated for full development.
2. Among the embryos raised in such a manner the following anomalies are especially remarkable:
a) Embryos, in whose half or partial portion the segmentation does not take place at all, while the remaining portions are segmented quite normally.
b) Embryos, whose rhizoid-formation takes place in several regions.