LIST OF ILLUSTRATIONS. 



FIG. PAGE 



1. Forms of bacteria . . . . . 17 



2. Hot-air steriliser . . .__ * ^ 36 



3. Koch's steam steriliser . . . . -38 



4. Autoclave ..... -39 



5. Steriliser for blood serum . . . . .40 



6. Meat press . . ' . ... . -42 



7. Hot-water funnel . . . , . -44 



8. Blood-serum inspissator . . . . .48 



9. Potato jar . . .. . . . > .51 



10. Cylinder of potato cut obliquely . . . 51 



ir. Ehrlich's tube containing piece of potato . . . 51 



12. Apparatus for filling tubes . . . . -53 



13. Tubes of media . . . . -53 



14. Platinum wires in glass handles . . . -55 



15. Method of inoculating solid tubes . * . -56 



1 6. Rack for platinum needles . . . . ' . 56 



17. Petri's capsule . . . . . -57 



18. Koch's levelling apparatus for use in preparing plates . 58 



19. Koch's levelling apparatus, showing transference of plate . 59 



20. Tube for Esmarch's roll culture . . . .61 



21. Apparatus for supplying hydrogen for anaerobic cultures . 65 



22. Esmarch's roll-tube adapted for culture of anaerobes . . 66 



23. Flask for anaerobes in liquid media . . . . .68 



24. Flask arranged for culture of anaerobes which develop gas . 69 



25. Slide for hanging-drop cultures . . . -7 



26. Apparatus for counting colonies . . . 71 



27. Geissler's vacuum pump for filtering cultures . " . -73 



28. Chamberland's bougie with flask arranged for filtration . 74 



