196 THE BEGINNINGS OF LIFE. 



meshes --^" in diameter, at first made their appear- 

 ance, and after a lapse of twelve hours the individual 

 units became more distinct and began to assume an 

 oval form. Whilst still aggregated together, they were 

 noticed slightly to increase in size. After a time they 

 separated from one another, and then began to elongate 

 into filaments which gradually displayed the characters 

 of Penictllmm glaucum. Pineau pointed out that the re- 

 semblance between these inferior members of the ani- 

 mal and of the vegetable kingdoms is so close, c qu'il 

 est impossible de distinguer une monade d'un globule 

 mycodermique dans les premieres phases de leur de- 

 veloppement. 5 



The specimens of Monas lens made their appearance 

 in a pellicle which formed on an infusion of veal. 

 They appeared first in the midst of it c as an indistinct 

 areolar network, the meshes of which were about aaW 

 in diameter.' This network gradually became more 

 distinct, owing to the contours of its component cells 

 becoming more clearly defined. These at last separated 

 from one another, and then each revealed a fine whip- 

 like filament proceeding from a part of its circumfer- 

 ence. The individual corpuscles, which were at first 

 quite stationary and in contact with one another, ex- 

 hibited slow oscillating movements as they separated *. 



1 He says, one sees first de petits amas de granulations dont les 

 contours commen9aient par etre diffus ; peu a peu ces amas devenaient 

 plus nettement circonscrit et ils finissaient par acqu^rir 1'aspect de 

 v^ritables Monades, d'abord immobile, puis douees de mouvement.' 



