CONTENTS. k'' 



CHAPTER Vlir. 



Several Infufion Animalcula are oviparous; feme 

 viviparous ; and all hermaphrodites In the ftridlcfl 

 fenfe - . - . . . - 160 



CHAPTER IX. 

 Animalcula poflefs the real and charaderiftic marks 

 of animality 173 



T<wo Epijlolary Dijfert attorn on Infufion Animalcula addrejfed 



to the author y by the celebrated M. Bonnet of Geneva. 

 Letter I. -- - •-..jpj 

 Letter IL 266 



Obfervations and Experiments on the Setnifial Vermiculi of 

 Man and other Animals^ 'with an examination of the cele- 

 brated Theory of Organic Molecules. 



Introdudion - - - - - - 277 



CHAPTER I. 



Defcription of the Seminal Vermiculi of Man, and 

 various other animals - - - - 285 



CHAPTER IL 

 The preceding obfervations compared with thofe of 

 Leeuwenhoeck — Confutation of fome opinions 

 concerning the nature of Seminal Vermiculi -302 



