LIST OF WOOD-CUTS. 



PACK 



Figure 1. Blood corpuscles of Ilamnierlic.ad Shark {Zyyccna malleus) in tlicir normal condi- 

 tion. Magnified 210 diameters ...... 31 



Figure 2. The same treated with a drop of acetic acid, showing the different stages of its 



action. 210 diameters . . . . . . . .31 



Figure 3. Blood corpuscles of Salt-water Terrapin in their normal condition. 210 diameters 32 

 Figure 4. The same acted on by acetic acid. 210 diameters . . . ■ . 32 



Figure 5. Blood corpuscles of a Yellow-bellied Terrapin {Emys serratu), kept without food 

 or water for several weeks, then placed in water and abundantly supplied with 

 vegetable food, and finally placed in carbonic acid gas. 210 diameters . 33 



Figure 6. Blood corpuscles of a Yellow-bellied Terrapin {Emys serrata), which had been 



destroyed in hydrogen gas. 210 diameters . . . . .35 



Figure 1. Blood corpuscles of Terrapins which had been deprived of air by a ligature round 



their necks. 210 diameters ....... 36 



Figure 8. Viscera of Snapping Turtle (C%e/on?<m 5e/-j3e«!!<na). One-half diameter . . 90 



Figure 9. Viscera of Gopher (Testudo poIyphemns). One-half diameter . . .91 



Figure 10. Rudimentary pancreas of the Plaice (Platessa ohionga). One-half diameter . 98 

 Figure 11. Viscera of Fresh-water Gar (Lepisosteus). One-half diameter . . .99 



Figure 12. Position of stomach, spleen, and intestine of Stingray {Trygon sabina), after re- 

 moval of liver. One-half diameter . . . . . .100 



Figure 13. Stomach and spleen of the same, turned over to one side and exposing the pancreas. 



One-half diameter ........ 100 



Figure 14. Stomach, spleen, and pancreas of 3Ienohranchiis maculatiis. One-half diameter . 101 

 Figure 15. Spleen and pancreas of "Water Snake {Tropidonotus sipedon) . . . 102 



Figure 16. Pancreas of Soft Shelled Turtle {Trionyx ferox). One-half diameter . .102 

 Figure IT. Pancreas of Yellow-bellied Terrapin {Emys serrata). One-half diameter . 103 



Figure 18. Pancreas of Gopher. {Testudo polyphemus). One-half diameter . . 103 



Figure 19. Viscera and impregnated uterus of Stingray (TV^/^fOJz saSma). One-half diameter. 110 

 Figure 20. Viscera of Congo Snake {Amphiy^a means). One-half diameter . . Ill 



Figure 21. Viscera of Black Snake (CbfeJer comsirzctor). One-half diameter . . 112 



Figure 22. Stomach, spleen, and pancreas of the Hammerhead Shark {Zygana malleus). One- 

 half diameter . . . . . . . . .116 



Figure 23. Stomach, spleen, and pancreas of Congo Snake {Amplnuma means). One-half 



diameter . . . . . . . . .116 



