178 



A .MANUAL OK BACTERIOLOGY 



Fermentation test for milk, 81 

 Fermentation tube, 25 

 Filtering apparatus, 122 

 Filtration, 121 



Fractional sterilization, 13, 14 

 Fuchsin, 33 



Gelatin, 6 ; nutrient, 10 ; sterilization 



of, 126 



Gentian violet, 34 

 Giltay and Aberson's solution, 26 

 Glossary of terms, 172-174 

 Glucose-formate bouillon, 24 

 Gram's iodine solution, 37, 67 

 Gram's stain, 37 

 Green pus, 95 



Heat, effect upon growth, 17 

 Heyden-Nahrstoff agar, 27, 61 

 Hot-air sterilizer, 15 



Infection threads, 69 

 Inflammation, 96 

 Inoculating chamber, 141 

 Inoculating needles, 21 

 Inoculating room, 39 

 Invertase, 101 

 Isolation methods, 38 



Kjeldahl method, 151 



Koch, Robert, 6 ; postulates of, 91 



Leeuwenhoek, 1 



Light, effect upon growth, 16 



Litmus milk, 23 



Litmus whey, 23 



Litmus-lactose agar, 24 



Litmus-lactose gelatin, 24 



Measures, conversion tables, 160 



Methylene blue, 33, 66, 83 



Micrococcus candicans, 50 



Microscope, 3 



Microspira tyrogena, 86 



Milk, acidity of, 80 ; bacteria of, 73 ; 

 contamination of, 74 ; as a culture 

 medium, 23 ; germicidal action of, 

 78 ; organisms in, 75 ; reducing ac- 

 tion of, 82 ; sterilization of, 127 



Mold cultures, 113 



Molds, amylolytic action of, 114 ; pep- 

 tonizing action of, 114 



Mordants, 32 



Morphology, 41 ; descriptive terms, 

 165-166 



Motility, 4 



Mucor, 108 



Npegeli's solution, 29 



Nessler's reagent, 144 



Neutral red broth, 25, 55 



Neutralization of media, 10 



Nitrate, determination of, 146 



Nitrate formation, 64, 65 



Nitrate-forming organisms, medium 

 for, 29 



Nitrification, 65 



Nitrite, determination of (Griess- 

 Ilosvay), 148; (Trommsdorf), 150 



Nitrite formation, 64 



Nitrite-forming organisms, medium 

 for, 29 



Nitrite reagent, 148 



Nitrogen, determination of, 151 ; fixa- 

 tion by nonsymbiotic organisms, 67 ; 

 fixation by symbiotic organisms, 68 ; 

 relation of soil bacteria to, 62 



Nitrogen-free media, 28 



Novy jar, 30 



Numerical nomenclature, 174 



Nutrition, 5 



Occurrence of bacteria, 1 



Oidium lactis, 87 



Oxygen, relation to aerobes, 16 



Pasteurization, 84, 120 

 Pectinase, 90 

 Penicillium, 110, 114 

 Peptonizing action of molds, 114 

 Permanent preparations, 139 

 Petri dishes, 16, 125 

 Phenol bouillon, 25 

 Phenoldisulphonic acid reagent, 146 

 Physical and biochemical features. 



descriptive terms, 168 

 Physiological salt solution, 32 

 Poisons, stimulation by, 113 

 Potato gelatin, 27 

 Potatoes used for cultures, 11 

 Pseudomonas Stewartii, 89 



Reductase, 83 

 Root tubercles, 69, 71 

 Ropy milk, 86 

 Roux tube, 11 



Saccharomyces, 98 

 Sake, 111 

 Sarcina lutea, 50 

 Seeds, sterilization of, 131 

 Septicaemia, 96 

 Sewage bacteria, 55 

 Sewage streptococci, 55 

 Snow, bacteria in, 55 

 Soft rot of vegetables, 89 



