LIST OF ILLUSTRATIONS. 



FIG. PAGE 



1. Forms of bacteria . . . . . .13 



2. Hot-air steriliser ... 27 



3. Koch's steam steriliser ...... 27 



4. Autoclave . . ... . . .29 



5. Steriliser for blood serum . . . . .30 



6. Meat press . . . . . . .31 



7. Hot-water funnel ...... 35 



8. Blood serum inspissator . . . . .40 



9. Potato jar ....... 45 



10. Cylinder of potato cut obliquely . . . .45 



11. Ehrlich's tube containing piece of potato . . .45 



12. Apparatus for filling tubes . . . . .48 



13. Tubes of media ...... 48 



14. Platinum wires in glass handles . . . .49 



15. Method of inoculating solid tubes . . . .50 



16. Rack for platinum needles . . . . .50 



17. Petri's capsule . . . . . . .51 



18. Koch's levelling apparatus for use in preparing plates . 54 



19. Koch's levelling apparatus ..... 54 



20. Esmarch's tube for roll culture . . . .55 



21. Apparatus for supplying hydrogen for anaerobic cultures . 58 



22. Esmarch's roll-tube adapted for culture containingi'anaerobes 59 



23. Bulloch's apparatus for anaerobic plate cultures . . 59 



24. Flask for anaerobes in liquid media . . . .61 



25. Flask arranged for culture of anaerobes which develop gas . 62 



26. Tubes for anaerobic cultures on the surface of solid media . 62 



27. Slides for hanging-drop cultures . . . . 63 



28. Graham Brown's chamber for anaerobic hanging-drops . 64 



29. Apparatus for counting colonies . . . .65 



30. Wright's 250 c.mm. pipette fitted with nipple . . 66 



31. Geissler's vacuum pump for filtering cultures . . .70 



32. Chamberland's candle and flask arranged for filtration . 70 



xvii 



