On the Periodical Liberation of the Oospheres in <i>Sargassum</i>

Abstract

1. Liberation of oospheres in Sargassum takes place simultaneously, not only for a given plant but also for the all plants of the locality.2. This simultaneous liberation proceeds in fortnightly crops on a particular day with a fixed interval after the highest spring tide; interval varies, however, in different species.3. The oospheres in one and the same receptacle are not discharged at one time but in two or three successive fortnightly crops.