*^N,, 





q. 



^evelo 



Qof 



Ger 



iHs. i 



""^ genetic t 



'' o^liles are 

 P, 



^^■iA from 



1 00 to,., 



^'■a/tt k 



by the same oWai 

 ^ of greenish oiiile^ 



7 



se 



Others, adopt the 



:rty, though the 



ralists seem inckli 



n them, or to denv tk 



i\*ule5.) 



with great precii,! 



1 and discharge 



as minute granular 

 bed the mode of form 



»uth, 



I 



t 



«' 



the evohtioJ 



ipearance 



of c 



obsen' 



ations 



ar 



Schroi* 



have 

 In 



khard 

 .:thin 



has 



also >' 



the 



body. 



t 



d their 



;r deve 



APPENDIX D. 



cv 



c. One or more germs appear to form occa- 

 sionally in animals which are about to 

 conclude their existence. Their forma- 

 tion seems to be the last vital act on the 

 part of the parent organisms, which gra- 

 dually perish as the development of their 



I. 



offspring progresses. 

 According to Nicolet 



^ an ovum forms, 

 under these circumstances, by the ag- 

 gregation of previously scattered gran- 

 ules, and the subsequent development 

 of a membrane around such a granule 

 heap. 



2. Pouchet also speaks ^ of the presence of 



ova, under such circumstances, in spe- 

 cimens of the genera Kolpoda and Ke- 

 ronea, though he does not seem to have 

 traced their mode of formation. 



3. Lastly, J. Haime states that he has seen a 



body of this kind appear shortly before 

 the death of Paramecium atireb'a, which 

 very soon broke up into about sixty 

 minute ovules or zoospores. These in- 

 creased in size, burst the sac in which 

 they were contained, and afterwards 

 escaped from the disintegrating body of 

 the parent through a rupture in its in- 

 tegument. 

 Thus almost every conceivable mode of reproduction 

 seems to take place by turn in these creatures, and the 

 developmental modifications which they have been seen to 

 undergo are so many and so various as to make it almost 



-• 



; vol. x^-^"' 



^ * Arcana Nature/ p. 30. 



2 i 



Heterogenie/ p. 400. 



