LIST OP ILLUSTRATIONS. 



ARRANGEMENT OF WORKING TABLE . . Frontispiece. 



FTG. PAGE 



1. Diagram of microscope 14 



2. Dissecting lens 18 



3. Dissecting microscope 18 



4. Scissors, forceps, and mounted needle . . 21 



5. Mode of letting down cover-glass 25 



6. Simple warm stage 30 



7. Simple warming apparatus shown in actual use . . 32 



8. Osier's phenomena 33 



9. Warm stage with thermometer and gas-regulator . 35 



10. Simple moist- chamber 40 



11. Gas-chamber 41 



12. Clot of frog's blood in capillary tube .... 46 



13. Apparatus for passing CO 2 over a preparation . . 49 



14. Slides for the passage of electric shocks over a prepara- 



tion 50 



15. Apparatus for passing electric shocks. .... 51 



16. Valve of mussel showing gills ..... 64 



17. Pravaz syringe ........ 75 



18. Method of irrigation 90 



19. Warming apparatus with gas-regulator for gold prepa- 



rations 95 



20. Upper part of gas-regulator ...... 96 



21. Outline of paper for embedding trough . . . 143 



22. Paper folded to form trough 144 



23. Embedding trough of capsule metal, on cork, with tis- 



sue pinned in situ . . . . ; . .144 



