^71 



^OBSERVATIONS and EXPERIMENTS 



ON THE 



SEMINAL VERMICULI OF MAN AND OTHER ANIMALS i 

 WITH AN EXAMINATION OF THE CELEBRATED 

 THEORY OF ORGANIC MOLECULES. 



INTRODUCTION, 



1 HE fubjed of which I am about to treat was 

 intended for a chapter of the preceding treatife 

 on Infufion Animacula, from the great analogy 

 between thefe beings and fpermatic vermiculi: 

 but the obliging fuggeftions of M. Bonnet have 

 changed my determination. I had fent him the 

 refult of my experiments on Animalcula, Vermi- 

 culi, and Mould ; he honoured them with his 

 approbation, and advifed me to feparate the fub- 

 jefts, to treat of each in a diiferent diifertation. 

 In this form he thought they would more readi- 

 -ly fix the attention and attrad the curiofity of 

 S ^ readers a 



