448 



INDEX. 



Bacteria, antitoxins for, 200 



diphtheria antitoxin, 346 



tetanus antitoxin, 331 

 appearance of, on culture media, 7 

 appearance of protoplasm of, 121 

 appearance under the microscope 



of, 7 

 avenues of entry of, into the body, 



172 

 behavior of, on various media, 81, 



113 

 capsules around, appearance of, 



49 



apparent nature of, 121 

 chlorophyll, relation to, i 

 chromogenic, 128 

 classification of, 117 

 cultivation of, 94 

 coagulation of milk by, 1 29 

 cover-glass preparations of, 27, 29 

 decomposition of cellulose, 129 



of fat, 129 



of urine, 129 

 definition of, 3 

 diseases caused by, 170 

 distribution, 4 

 early observation of, 10 

 early speculations about, 10 

 effects of agitation on, 246 



of cold on, 246 



of desiccation on, 246 



of disinfectants on, 247 



of electricity on, 247 



of heat on, 125, 247 



of moisture on, 126 



of oxygen on, 127 



of preservatives on, 159 



of pressure on, 247 



of Rontgen rays on, 247 



of sunlight on, 247 

 end-products of growth of, 129 

 endotoxins of, 186 

 enzymes of, 128 

 ferments formed by, 128 

 flagella on, 125 

 fluorescent, 128 

 forms of, 3, 

 grouping of, 4, 118 

 harmless, 5, 120 

 higher, compared with lower, 118 



certain special, 276 

 in expired air, 162 

 in feces, 165 

 in fish, 159 

 in stools of children, 165 



Bacteiia, inoculation of culture media 

 with, 78 

 inversion of starch by, 129 

 inversion of cane-sugar by, 129 

 involution forms, 121 

 isolation of, by animal inoculation, 



94 

 by dilution, 94 

 by Esmarch roll-tube, 99 

 by heating spore-bearers, 94 

 by plating in Petri dishes, 96 



liquefaction of gelatin by, _i 28 



method of studying, 21, 113 



modification of pathogenic power, 

 127 



moisture, in relation to growth of, 

 126 



morphology of, 3, 117 



motility of, 124 



multiplication of, 122 



nitrifying, 5, 126 



non-pathogenic, 267 



number of species of non-patho- 

 genic, 267 



of air, 137 



alimentary canal, 164 



the conjunctiva, 161, 162 



the cranial sinuses, 160 



the external genitals, 163 



the Fallopian tubes, 160 



the gall-bladder, 160 



the ground-water, 139 



the intestines, 164 



the mouth, 161 



(B. buccalis maximus), 277 



(B. pneumoniae Friedlander), 



315 



(Leptothrix buccalis), 277 



(Leptothrix innominata), 277 



(Leptothrix maxima buccalis), 

 277 



(M. lanceolatus), 305 



(S. dentium), 274 



the nasal cavity, 161 



the normal human body, 160 



the urethra, 162 



the vagina, 162 

 part played by, in nature, 5 

 pathogenic, classification of, 282 



definition of, 120 

 phosphorescent, 128 

 physiology of, 117 

 products of growth of, acids, 



131 

 enzymes, 128 



