LIST OF ILLUSTRATIONS IN TEXT. 



FIG. PAGE 



1 . Forms of bacteria ... ] 3 



2. Hot-air steriliser . . . . ... .28 



3. Koch's steam steriliser . . . . . .28 



4. Autoclave ....... 30 



5. Steriliser for blood serum . . . . .31 



6. Meat press .... 32 



7. Hot-water funnel . . . . . .36 



8. Blood serum inspissator . . . . . .41 



9. Cylinder of potato cut obliquely . . . . .46 



10. Ehrlich's tube containing piece of potato . . .46 



11. Apparatus for filling tubes . . . . .54 



12. Tubes of media ....... 54 



13. Platinum wires in glass handles . . . . .55 



14. Method of inoculating solid tubes . . . .56 



15. Rack for platinum needles . . . ... 56 



16. Petri's capsule . . . . . . .58 



17. Koch's levelling apparatus for use in preparing plates . . 59 



18. Koch's levelling apparatus . . . . .59 



19. Esmarch's tube for roll culture . . . . .61 



20. Apparatus for supplying hydrogen for anaerobic cultures . 64 



21. Esmarch's roll-tube adapted for culture containing anaerobes . 65 



22. Bulloch's apparatus for anaerobic plate cultures . .65 



23. M'Leod's capsule for anaerobic plating . . . .66 



24. Flask for anaerobes in liquid media . . . .69 



25. Flask arranged for culture of anaerobes which develop gas . 70 



26. Tubes for anaerobic cultures on the surface of solid media . 70 



27. Slides for hanging drop-cultures . . . . .71 



28. Apparatus for counting colonies . . . . .72 



29. Wright's 250 c. mm. pipette fitted with nipple . . .73 



30. Geissler's vacuum pump for filtering cultures . . .77 



31. Chamber-land's candle and flask arranged for filtration . . 77 



32. Chamberland's bougie with lamp funnel . . . .78 



xix 



