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 and becomio? 



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ne cells mk 

 nents assud 



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 ellipsoi' 



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._Ha«"S 



tliJS BEGINNINGS OF LIFE 



4T5 



placed a few filaments of Vaucheria in a watch-glass 

 protected by an inverted wine-glass^ I founds two or 

 three days afterwards, that a thin scum had formed upon 

 the surface of the fluid ^. On microscopical examination, 

 the most notable constituents of the scum were certain 

 motionless, green corpuscles, varying from 

 in diameter, and containing ovoid chlorophyll vesicles 

 (Fig. 82,/)- These bodies were evidently undergoing 

 transformations in different directions^ Many of the 

 smaller corpuscles were 



3000 



to 



8"5(J 



I 



becoming decolourized. 



and 



were protruding rays so as to convert themselves 

 (as the Nitella vesicles had done) into specimens of 

 Actinophrys, which subsequently assumed the forms of 



L 



Monads or Amcebas. Some of the larger corpuscles, 

 however, gradually decolourized, so as to undergo higher 

 transformations, in a manner which will be subse- 

 quently detailed 2. In other smaller corpuscles the 

 vesicular contents, instead of fusing and becoming 

 decolourized, underwent an extra amount of indivi- 

 dualization. The chlorophyll vesicles increased in size 

 and became of a slightly brighter green, whilst the thin 

 mvestmg membrane seemed gradually to dissolve away, 



green, rounded or ovoidal corpuscles, 

 diameter {gg\ which subsequently 



leaving 



about 



bright 

 8000 -in 



:r Pedi^*'' : 



i othe- , 



iced upo'' " 

 ks of tb^ «"^ 

 nd d ti^=^ 



n 



4 



These corpuscles seemed to grow first upon the surface of the 

 Vaucheria filaments. . * 



^ Leading very frequently to the production of Vorticellce. Cor- 

 puscles given off from other Algse have been observed to go through 

 similar transformations. 



