CONTENTS. 



INTRODUCTION. 



PAGE 



Observation of animals during life Drawing Methods of killing 

 animals Dissection Injection Microscopical examination 

 Drawing with the camera lucida Measuring of micro- 

 scopical objects Use of hardening and staining reagents 

 Section-cutting Mounting microscopical objects Prepara- 

 tion of skeletons ........ xix 



CHAPTER I. 

 Peotozoa. 



Amoeba Paramecium Opalina Vorticella Monocystis Try- 

 panosoma 1 



CHAPTER H. 

 Hydea, Obelia. 



Examination of a living specimen Examination of prepared 



specimens 18 



CHAPTER TIL 



The Livee-fltjke op the Sheep. Fasciola (Disfomum) 

 Jiepatica. 



The mature liver-fluke Life-history of the liver-fluke . . 34 



