



I 



CHAPTER XXL 



TRANSFORMATIONS OF EUGLENiE AND OTHER ORGANISMS I 



MODES OF ORIGIN OF CILIATED INFUSORIA. 



Crystals and Organisms, Variability of latter. Derivative Organisms. 

 Observations of Dr. Gros and of Author upon Euglence. Their 

 Resolution into Fungus-germs and Monads. Resolution of other 

 Euglenae into Diatoms and Algoid Corpuscles. Transformations 

 of entire Euglense into Diatoms, Desmids, and Pediastr^e. Trans- 

 formation of others into Confervse. Interchangeability of Alg^e 

 and Lichens. Relations of Alg^e to Mosses. Observations of 

 Dr. Gros and M. Brebisson. Community of Nature between 

 Alga^, Pediastreee, Desmids, and Diatoms. The latter form a 

 Divergent Series. Transformations of Euglenj^e into Amoeba and 

 Actinophrys. Their subsequent Development into Ciliated Infu- 

 soria. Direct Transformations of Euglence into Ciliated Infusoria. 

 Variable Nature of resulting Forms. 



Other Modes of Origin of Ciliated Infusoria. Transformations of 

 Chlorococcus Vesicles into Oxytricha and Pl^esconia. Similar 

 Mode of Origin of Vorticella. Development of latter also from 

 bud-like outgrowths, and from the 'pellicle.' Origin of other 

 Ciliated Infusoria from Monads and Amceb^. Testimon}' of 

 various Observers. Dependence of Forms upon the size of Trans- 

 forming Matrices. Observations of M. Nicolet upon Chara. Mode 

 of Origin of Otostoma within Nitella-filament. Origin of almost 

 similar forms of Infusoria from Animal Matrices. Pangenesis in 

 Rotifers. Their Resolution into Actinophrys, Peranemata, and 

 Arcellin?e. Tendency of these Forms to give rise to Ciliata. 



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