CONTENTS. 



INTEODUCTION. 



PAGE 



On the observation of animals during life On drawing On the 

 methods of killing animals On dissection On injection On 

 the use of reagents On microscopical examination . . . xv 



CHAPTEK I. 



PROTOZOA. 



Amoeba Paramecium Opalina Vorticella 1 



CHAPTEE II. 

 HYDRA. 



Examination of a living specimen Examination of transverse 



sections . 13 



CHAPTEE III. 



THE LIVER-FLUKE OF THE SHEEP. Fasciola (Distomum) 

 hepatica. 



The mature liver-fluke Life-history of the liver-fluke ... 25 



