338 INDEX OF SUBJECTS. 



ENEMAS, fate of nutrient, 52 



ENTERIC JUICE (see Intestinal juice) 



ENTEROKINASE, 70, 76, 92, 244, 246 ; as activator of ferments, 



246; nature of, 247; secretion of, 247 

 ENZYMES, 81 (see also Ferments and Catalyzers) 

 EPITHELIUM OF INTESTINE, selective permeability of, 256 

 EQUILIBRIUM, chemical, 106 

 EREPSIN (see Protease) 



ERYTHRITE, diffusion of, into protoplasm, 271 

 ESTERS, diffusion of, into protoplasm, 271 

 ETHYL ACETATE, 106 

 ETHYL ALCOHOL, 106 

 ETHYL BUTYRATE, analysis and synthesis of, by platinum, 97; 



analysis and synthesis of, by lipase, 151 

 EXCRETION, as function of alimentary tract, 311; urinary and 



alimentary, compared, 312, 314 



FAECES, 317; amount of, 322; effect of food on, 322; color of, 

 322 



FAT, rate of leaving the stomach, 17, 21 ; digestion of, 75 ; and 

 lipase, 149, 287; and gastric secretion, 239; emulsification 

 of, 240, 287, 288; chemical changes in, after ingestion, 287, 

 291; analysis of, in intestine, 291, 292; synthesis of, in 

 intestine, 293; absorption of (see Fat absorption) 



FAT ABSORPTION, 287; amount of, 287; form in which it occurs, 

 and solubility of absorption products, 288 ; theories of, 289, 

 290, 291, 292, 293, 294; paths of, 294, 295; after occlusion 

 of thoracic duct, 295; velocity of, 295; amount of, 295; 

 r61e of bile in, 296, 297, 298; role of pancreas in, 296, 297, 

 298 (see also Fat digestion) 



FAT DIGESTION, as influenced by bile, 238, 239; as influenced by 

 intestinal and pancreatic juices, 239 



FATTY ACIDS, solubility of, 241, 242 



FERMENTATION, 79; theories of, 83; velocity of, 85; effect of 

 hydrocyanic acid and hydrogen sulphide on, 98 ; in gastro- 

 intestinal tract, 165 



FERMENTS, inorganic, 79; organic, 80; organized, 81; un- 

 organized, 81 ; nomenclature of, 81 ; general properties of, 

 83, 84; effect of temperature on, 86; decomposition of, 86; 



