138 



A CHEMICAL SIGN OF LIFE 



30; frogs, Rana esculenta, and 

 temporaria, 30; in ganglion, 

 Limulus polyphemus, 32; in 

 muscle, frog, Rana temporaria, 

 30; lobster, Homarus vulgaris, 

 30; man at rest, 30; in differ- 

 ent parts of nerve, 76, 77; in 

 hydrogen, 26, 43; in "inexci- 

 table" nerves, 65; in killed 

 nerves, 24; in nerves: carp, 

 R. lat. rag., and R. lat. ace., 79; 

 catfish, R. lat. vag., and R. lat. 

 ace., 79; chloral hydrate, 65; 

 dog, anterior root, posterior 

 root, hypoglossal, 79; frog, 

 Rana pipiens, sciatic, vesting, 

 and stimulated, 32; guinea 

 pig, 22; hypoglossal, 79; "in- 

 excitable," 62; Limulus, claw 

 nerve, 32; mouse, 22; optic 

 nerve (whole) proximal and dis- 

 tal, 32; rabbit, 22; rat, 22; 

 6 skate, Raia erinecia, and 

 Raia ocallata, optical, olfactory, 

 oculomotor, 22; spider crab, 

 Libinia canaliculata, claw nerve, 

 whole, proximal, distal, 32; 

 squiteague, cy no scion ^ regalis, 

 22; stimulated, non-stimulated, 

 under treatment of different 

 concentrations of ethyl ure- 

 thane, 62; turtle, 22; under 

 anesthesia, 25 ; in resting nerves, 

 19, 22, 32; in stimulated nerves, 

 at successive time intervals, 65; 

 under anesthesia, 25, 61. 



Carbon dioxide: as a measure of 

 metabolism, 12; as end product 

 of metabolism, n, 34; gradient, 

 79; increment of, on stimula- 

 tion as sign of life, 87, chap, v; 

 influence on electrical change, 

 14; method of analysis of, see 

 Biometer; method of detecting, 

 in nerve, 16, 20; sources of, 

 23- 



Carbon dioxide free air, 116. 



Carbonate, 23. 



Carp. See Carbon dioxide pro- 

 duction. 



Cat fish. See Carbon dioxide 

 production. 



Chemical energy, 84. 



Chemical processes, various, in 

 the living matter, 10. 



Chemical sign of life, algae, 93; in 

 Australian pine, 92; in common 

 glass, 92; in corn, 91; in 

 Japanese ivy, 9 2 ; in Lincoln oats , 

 91; in mustard seeds, 91; in 

 nerve, 34, 55; in rice, 91; 

 in Swedish selected oats, 91; in 

 wheat, 89. 



Chemical stimulation. See Stim- 

 ulation. 



Chemical transformation, 12. 



Child, 74, 81. 



Chloral hydrate, 61. See also 

 Carbon dioxide production. 



Chloroform, 61. 

 Chlorophyll, 2. 

 Claude Barnard, 48. 

 Claw nerve. See Nerve. 

 Cold-blooded animals, 22. 

 Conducting medium, 18. 

 Conduction: as phenomenon of 

 living matter 4; also chap. iv. 



Conductivity, 6. See also Con- 

 duction. 



Connective tissue, 16, 18, 46. 



Contractility, 8. 



Crab. See Cancer pagurus. 



Crayfish. See Astacus. 



Crocker, 92. 



Crustacea. See Carbon dioxide 

 production. 



Current of action. See Action 

 current. 



Cyanide. See Potassium cyanide. 



Cynosion regalis. See Carbon di- 

 oxide production. 



Daniel cell, 52. 

 Death, rapidity of, 73. 



