xiv LIST OF ILLUSTRATIONS 



FIG. PAGE 



4. Dry Heat Sterilizer - - - - 10 



5. Moist Heat Sterilizer - - - 11 



6. Hand-Driven Centrifuge - 12 



7. Water-Driven Centrifuge - - 13 



8. Potato Finger - - 17 



9. Plugged and Sloped Medium Tube - - - IS 



10. Platinum Needles - - 20 



11. Plugged Stab Medium Tube - - 21 



12. Petri Dish, or Plate ------ 22 



13. Friinkel's Tube for Anaerobic Cultivation - - 24 



14. Wright Spreader ------ 26 



15. Wright Spreader mounted on Another with Sealing- Wax - 26 



16. Cornet Forceps - - 27 



17. Hanging-Drop Preparation - - - - 35 



18. Types of Growth in Stab Culture - - 41 



19. Types of Growth in Stab Culture - - - 41 



20. Surface Elevation of Colonies - - - - 42 



21. A Simple Capillary Pipette - - - - 48 



22. Throttled Capillary Pipettes - - - 49 



23. Drawn-Out and Sealed Test-Tube - ' - - - 50 



24. Sealing off One End of a Glass Tube - - - - 51 



25. Wright's Blood-Capsule - - - - - 52 



26. Wright's Blood-Capsule - - - - - 52 



27. Wrighfs Blood-Capsule - - - - - 52 



28. Slide showing Blood-Drop - - - - - 53 



29. Agglutination of Bacteria - - - - 59 



30. Micro-organism, Amboceptor, and Complement - - 62 

 31 Pipettes, one with Piubber Teat, containing Elements 



separated by Columns of Air, and thoroughly mixed 



ready for incubating - - - - - 65 



32. Vaccine Syringe - - - - - - 78 



33. Serum Syringe - - - - - - 78 



34. Chart showing the Effects of a Suitable Dose of Vaccine - 81 



35. Chart showing when a Dose of Vaccine is too Small - - 82 



36. Chart showing when a Dose of Vaccine is too Large - - 82 



37. Vessel used at the Serum Institute for collecting Blood from 



the Tail of an Immune Pig - 192 



