, 212 



BIOLOGY AND ITS MAKERS 



in its less grotesque form, his discovery of the developmen 

 of the eggs of plant-lice without previous fertilization, his 

 researches on regeneration of parts in polyps and worms, 

 and other observations place him among the conspicuo 





Fig. 64. — Charles Bonnet, 1 720-1 793. 



naturalists of the period. His system of philosophy, whk 

 has been carefully analyzed by Whitman, is designated 

 that writer as a system of negations. 



In 1 82 1, J. Fr. Meckel, recognizing the great value 



