. Fecundation in plants. Plant embryology; Plants, Sex in; Karyokinesis. PTERIDOPH YTA. 135 Belajeff ('99), who has also studied the development of the sperma- tozoid in Marsilia, agrees with Shaw in so far as the transformation of the primordium of the blepharoplast into the mature cilia-bearing organ is concerned, but, as regards the earlier behavior of the primordia, these observers disagree in certain important particulars. Belajeff, who regards the blepharoplast as a centrosome, finds that in the division of the grandmother-cell of the spermatozoid, the primordia, which lie some distance
. Fecundation in plants. Plant embryology; Plants, Sex in; Karyokinesis. PTERIDOPH YTA. 135 Belajeff ('99), who has also studied the development of the sperma- tozoid in Marsilia, agrees with Shaw in so far as the transformation of the primordium of the blepharoplast into the mature cilia-bearing organ is concerned, but, as regards the earlier behavior of the primordia, these observers disagree in certain important particulars. Belajeff, who regards the blepharoplast as a centrosome, finds that in the division of the grandmother-cell of the spermatozoid, the primordia, which lie some distance from the nucleus, divide, and a faint central spindle is formed between the daughter primordia. This structure, he maintains, gives rise to the karyokinetic spindle just as in some animal. 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 Mottier, David Myers. [Washington] The Carnegie Institution of Washington
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