INDEX 



139 



Dendrite, 77; metabolic gradient 



in sensory, 78. 

 Dextrose, 82. 

 Diphasic current, 13. 

 Dog, metabolism in. See Carbon 



dioxide production. 

 Drugs, on refractory period, 48. 

 Dry seed. See Seed. 

 Dyer, Thistleton, 87. 



Efferent fiber, 58; gradient in, 

 see Metabolic gradient. 



Eggs, production of acid in, 41. 



Ehrlich, 37. 



Electrical changes: as functional 

 change, 4; discovery of, 4; 

 as sign of passage of nerve im- 

 pulse, 23; influence of carbon 

 dioxide on, 13; See also Blaze 

 current; Electrical sign of life. 



Electrical current, 37. 



Electrical resistance, changes in, 

 after stimulation, 101. 



Electrical sign of life. See Blaze 

 current; Electrical resistance. 



Electricity: measure of, 3; ve- 

 locity of, 8. 



Electrodes, 12, 13, 40. 



Electromotive force, in nerve, 35. 



Electropositive, 58. 



Energy, source of, in living matter, 

 9, ii. 



Ether, 25, 61; for effect of, on 

 carbon dioxide production, see 

 Carbon dioxide production. 



Ethyl ure thane, 25, 63. See also 

 Carbon dioxide production. 



Excitability: degree of, 59; de- 

 pression of, see Anesthetics; 

 its relation to conductivity, 57, 

 chap, iv; its relation to metab- 

 olism, 59; three criteria of, 

 59 ; transmission of , 41 . See also 

 Irritability. 



Faraday, 3. 

 Fat, 10. 



Fatigue: as metabolic sign, 49; 

 lack of, in nerve, 8, 46. 



Fermentation, 10, 23, 25, 27. 



Film, of barium hydroxide, 15, 16. 



Fletcher, 30, 41. 



Forgetting, phenomenon of, 35. 



Frog. See Carbon dioxide pro- 

 duction. 



Frohlich, 45. 



Functional changes, 4; in the 

 nerve impulse, 7; invisible, 4; 

 See also Electrical changes; 

 Chemical changes. 



Fundulus hectroclitus, no. 



Galen, n. 



Galvani, 5, 13. 



Galvanometer, 3, 5, 13, 23. 



Ganglion, 31; comparison with 

 metabolism of nerve fiber, 31; 

 heart ganglion, 32. See also 

 Carbon dioxide production. 



Glass plate, 20, 37; diagram, 38. 



Gotch and Burch, 47. 



Gradient: metabolic, 79; in 

 afferent fiber, 76; in efferent 

 fiber, 72; in sensory dendrite, 

 77; relation of, to direction of 

 impulse, 78, 80; structural, 75. 



Green pigment, 2. 



Growth, 10, 35. 



Guinea-pig. See Carbon dioxide 

 production. 



Haberlandt, 54. 



Heart, 31. 



Heat coefficient, 52. 



Heat formation: in brain, 36; in 



nerve 7, 49; its relation to 



metabolism, 5. 

 Helmholtz, 50. 

 Herrick, 71. 



Hill, 30; on heat formation, 50. 

 Homarus vulgaris. See Carbon 



dioxide production. 

 Hopkins, 41. 



