TABLE OF CONTENTS. 



CHAPTEE II. 



EXAMINATION OF AIR AND WATER. 



PAGE 



Spallanzani, Tyndall, Pasteur, Miquel, Koch, Hesse, Hueppe, 



v. Schlen, Frankland, Petri, Hansen, 38 



Hansen's Zymotechnical Analyses of Air, 43 



Holm and Jorgensen's Zymotechnical Analyses of Water, 47 

 Hansen's Method for the Zymotechnical Analyses of Air and 



Water, ------ 49 



CHAPTER III. 

 BACTERIA. 



Forms, - 52 



Anatomical Structure, Colouring Matters, Phosphorescent 



Bacteria, Locomotion, ------- 54 



Multiplication, Growth-forms, Formation of Spores, Endo- 



sporic and Arthrosporic Bacteria, Zoogloea, - 55 



Influence of Temperature, Light, Mechanical Concussion, - 57 



Anaerobic and Aerobic Species, 58 



1. Acetic Acid Bacteria, - 58 



2. Lactic Acid Bacteria, 68 



3. Butyric Acid Bacteria, - 76 



4. Alcohol-forming Bacteria, 80 



5. Kephir-organisms, Ginger-beer Plant, - 81 



6. Slime-forming Bacteria, - 85 



7. Bacteria exercising an inverting, diastatic, or peptonising action, 90 



8. Sarcina Forms, - - - - - - 91 



9. Crenothrix, Sulphur Bacteria, Bacteria converting Ammoniacal 



Salts into Nitrates, - - 95 



CHAPTER IV. 



THE MOULD-FUNGI. 



Occurrence, - 97 



1. Botrytis cinerea, - - 98 



2. Penicillium glaucum, - .... . ioi 



3. Eurotium Aspergillus glaucus, A. fumigatus, A. niger, - - 105 



4. Aspergillus Oryzai, A. Wentii, - - - 108 



5. Mucor Mucedo, - - - - - - - - -111 



