ILLUSTRATIONS. 



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Blood Corpuscles of Vertebrata 6 

 Amoeba ... .19 

 Infusoria and Foraminifera {Euglena, Cercomonas, Polytoma, 



Textularia, and Glohigerina) 20 

 Ciliate Protozoon {BaZantiduvi coli) 23 

 Coccidiu-m oviforine of Rabbit's Liver 2.5 

 The Common Starfish ( Uraster rubens) 30 

 Liver-fluke (Bistomum hepaticum) 37 

 Life-history of Distomum hepaticum 38 

 Diagram showing Life-history of Liver-fluke 40 

 Scolex of TcEnia solium and Proglottis of Tapeworm 44 

 Two forms of Cysts of Cestodes {Cysticercus and Canurus) 46 

 Sturdy in Sheep (Comurus cerebndis and Tania canurus) 48 

 Fragment of Measly Pork 60 

 Tania echinococcus . 52 

 Diagram showing formation of Proligerous and Secondary Ves- 

 icles in Echinococcus 63 

 Tasnia serrata , 54 

 Embryo and Ova of Sclerostomum rubrum 68 

 Anguillulida; (Eelworms) . 60 

 The Lung "Worm {Eustrongylus jilaria) 61 

 Armed Palisade-worm of Horse {Sclerostomum armatum) 63 

 Vermiceous Aneurism of Great Mesenteric Artery 64 

 Sclerostomum tetracanthum 65 



