INDEX 



Acetone, 218; formation, in bac- 

 terial cultures, 136. 

 Acid, acetic, product of bacte- 

 rial activity, 8; in bottle-fed 

 babies, 65 ; in healthy animals, 

 66. 



butyric, production in putre- 

 faction, 218; by anaerobes, 

 293; by B. butyricus, 46; from 

 lactic acid, 22; in mouth, 29, 

 30, 300 ; in stomach, 30. 

 caproic, 293, 294. 

 glycerophosphoric, 222. 

 indol-acetic, 243. 

 indol-amido-propionic, 243. 

 indol-propionic, 244. 

 lactic, 22. 

 oxalic, 216. 

 propionic, 218, 293. 

 skatol-amido-acetic, 243. 

 valeric, 293. 



Acid formation, in bottle-fed 

 babies, 67; in fermentation, 

 215. 



Acids, volatile fatty, 21. 

 Acidophile bacteria, 11. 

 Adult life, bacteria in intestines, 72. 

 Aerobic and anaerobic conditions, 

 in digestive tract, 23; in in- 

 testine, 31 ; in stomach, 30 ; 

 tested by methylene blue, 34. 

 Age, effect on intestinal bacteria, 



35. 



Aggressins, 160 ; in dysentery, 174. 

 Alcohol, formation in bacterial 



cultures, 8, 136. 

 Amines, 220. 



Ammonia, formation in bacterial 

 cultures, 136, 220; in bottle- 

 fed children, 66, 67. 

 Ammonium butyrate, 295, 299. 

 Anemia, in saccharo-butyric pu- 

 trefaction, 303. 



Anaerobic bacteria, 191 ; action 

 on bilirubin, 294; action on 

 proteids, 24 ; in bottle-feeding, 

 60, 63 (footnote); with diet 

 of bread, 87; in caries of 

 teeth, 29; growth in intestine 

 of cats, 80, 81; influence of 

 reaction on growth and prod- 

 ucts, 21 ; obligate, 24 ; patho- 

 genicity, 117; putrefactive, 

 10; reduction of numbers by 

 treatment, 329; in saccharo- 

 butyric putrefaction, 279, 291 ; 

 spore-bearing, 6. 



Anaerobic life, definition, 25. 



Animals, bacteria in intestines, 80 ; 

 relative duration of life, 85. 



Anthrax bacillus, 162. 



Anthrax, symptomatic, formation 

 of indol, 243. 



Aromatic products of putrefactive 

 decomposition, 237. 



Autolysis, 1. 



Autotoxins, 18. 



Autotoxin theory, 17-19. 



Bacillac, 334, 335. 



Bacillus, acidolacticus, 207, 244, 335. 

 acidophilus, 11 ; in bottle-fed 

 children, 62; in nurslings, 38; 

 protective action, 11. 

 aerogenes capsulatus, 2 (foot- 

 note), 6, 11, 25, 196, 197; in 

 acute inflammation of the 

 ileum, 206; in adult life, 74; 

 agglutinating action, 199; in 

 anaerobic cultures, 117; in 

 animals, 82 ; biochemical 

 properties, 208; in bottle-fed 

 children, 63; in carnivorous 

 animals, 80 ; in childhood and 

 adolescence, 70; cultural in- 

 vestigation, 116; different 



353 



