LIST OF ILLUSTRATIONS. 



^I'^- PAGE 



1. Micrococci, Bacilli, Spirilla 4 



2. Test-tube witli Culture-medium 7 



3. Microscope ig 



4. Ahh6 Condenser 20 



5. Platinum Wires 22 



6. Hanging-drop 23 



7. Cornet Forceps for Cover-glasses 26 



8. Stewart Forceps for Cover-glasses 26 



9. Kirkbride Forceps for Slides 37 



10. Schanze Microtome 38 



11. Hot-air Sterilizer 50 



12. Arnold Steam Sterilizer 52 



13. Massachusetts Board of Health Sterilizer 53 



14. Koch Steam Sterilizer 54 



i5- Autoclave 56 



16. Kitasato Filter 57 



17. Test-tube with Potato 66 



18. Wire Basket for Trst-tubes 70 



19. Manner of Holding Test-tubes- 73 



20. Stab-culture 74 



21. Smear-culture 74 



22 . Incubator 76 



23. Reichert Gas-regulator 77 



24. Gas-regulator 77 



25. Koch Automatic Gas-burner 78 



26. Buchner's Method for Cultivating Anaerobes 80 



27. Frankel's " " " " 81 



28. Novy's " " " " 82 



29. Streak Culture of the Potato Bacillus 83 



30. Petri Dish t 86 



31. Dilution-cultures in Esmarch Roll-tubes facing 87 



32. Appearance of Colonies on Gelatin in a Petri Dish facing 88 



xvii 



