THE GAMETES IN PLANTS AND ANIMALS 317 



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127 



FIGS. 123-127. Gametes of various algae: Fig. 123, young egg cell of Volvox 

 cureus, connected with surrounding vegetative cells by numerous plasmatic strands 

 (t'rom Klein, '89); Fig. 124, spermatozoid of Volvox aureus (from Klein, '89); Fig. 125, 

 part of filament of Oedogonium, showing oogonium with large egg and below three 

 antheridia, from two of which spermatozoids have escaped (from Coulter, etc., '10); 

 l'ig. 126, branch of Char a, bearing oogonium, og, containing a single egg and antherid- 

 ium, an (after Sachs, from Coulter, etc., '10); Fig. 127, spermatozoid of Chara (from 

 Uelajeff, '94). 



