THE BEGINNINGS OF LIFE. 451 



their Euglenian matrices. The filaments themselves, 

 but for their being much more slender than usual, re- 

 sembled and grew after the fashion of Vaucheria 1 . 



Dr. Gros also speaks of the transformation of speci- 

 mens of these worm-like Euglense into Confervas. 

 Some of them produced Closteria and various animal 

 forms in the months of August and September, though 

 others did not become transformed till November and 

 December. Concerning these Dr. Gros says 2 : c Des 

 grandes Euglenes done (PI. L 5 fig. 11-14) ont P r * s de 

 la nourriture et de la ve'siculation (fig. 1 2) trainent une 

 vie languissante et se transformant en une tronc 

 (fig. n) Confervien qui se constitue une Conferve 

 (fig. 13)5 susceptible de se deVelopper ulterieurement, 

 comme nous 1'avons deja vu pour d'autres especes. 3 

 And in reference to another stock of Euglenas, some 

 of which had also given origin to Desmids, Dr. Gios 

 says 3 : ' D'autres vesicules Eugleniennes prennent une 

 forme vegetative Confervienne plus claire, et ces vege- 

 tations deviennent assez abondantes pour augmenter 

 la teinte verte de 1'eau.' 



We have elsewhere 4 given an abstract of the evi- 



1 In a road-side ditch at Hendon, from which I frequently procured 

 supplies of Euglense, I found on several occasions, during the months of 

 January and February, that when the quantity of water became diminished 

 so as to leave the Euglenoe just above the water-mark, beautiful patches 

 of Vaucheria speedily appeared in these situations. At other times Oscil- 

 latorise have been seen to develop in abundance under similar conditions. 



2 Loc. cit., pp. 338 and 318. 



8 Loc. cit., p. 302. 4 Appendix D, pp. lix Ixiii. 



