CONTENTS. Xlll 



PAGE 



Poisons and other Members of this Group Mussel Poisons : 

 two Classes, viz., those Without Oxygen and those Con- 

 taining Oxygen Ptomaines the Result of the Activity of 

 Micro-organisms Loffler's Experiments on Diphtheria 

 Poison, an Enzyme Roux and Yersin's Diastase Hankin, 

 Albumose Brieger and Fraenkel, Toxalbumen Method 

 of Preparation of Albumoses and of Toxalbumens Near 

 Relationship of Proteid Poisons and the Ptomaines Martin's 

 Observations. 



CHAPTER XXII. 



VACCINATION - 368-380 



Natural Immunity Ingrafting of Small-pox Jenner's Discovery 

 Klebs Pasteur Chauveau Grawitz's Theory Buchner's 

 Theory Metschnikoff's Work Greenfield's Observations 

 on Anthrax Toussaint's Vaccinal Fluid Pasteur's Classical 

 Experiments Other Methods of Diminishing Virulence 

 Chauveau's Soluble Poison Experiments Protection by 

 Alkaloids, Albumoses and Toxalbumens Saprophytic 

 " Anthrax " Hueppe and Wood Antagonism by Blue-pus 

 Products Immunity not the same as Antagonism Sum- 

 mative Action of Bacteria. 



CHAPTER XXIII. 



BACTERIA IN AIR, EARTH, AND WATER - 381-396 



Spores in the Air in Hospitals Effects of Currents and Altitude 

 Direction of Wind Nature of Country over which it passes 

 Frankland's, Carnelley's, Haldane's and Petri's Experi- 

 ments Few Bacteria in the Air of Sewers Tyndall's 

 Glycerine Chamber Examination of Air Koch's Method 

 Miquel's Method Hesse's Apparatus Modified Hesse's 

 Apparatus Miquel's Sugar Method Bacteria in Water 

 Effect of Standing Sluggish Movement Oxidation of Or- 

 ganic Matter in Water Organisms carried by Sewage 

 Number of Organisms in Water Method of Procedure in 

 Analysing Water Pfuhl's Flasks Petri's Dishes Pe- 

 truschky's Flask Plate Cultivations Cooling Apparatus 

 Von Esmarch's Tube Cultures Effect of Rains, Frosts and 

 Thaws Relation of Bacteria to Ammonia Basis on which 

 to determine whether Water is fit for Drinking or not 

 Filtration Method of Examination of Soil. 



APPENDIX . 397-442 



INDICES . ...... 443.459 



