INDEX 



Acidity, 16 



Action current, in frog's heart, 96 



Adhesion, 12 



Adrenalin, effect of, on molluscan heart, 94 



on turtle's heart, 90 

 Adsorption, 18 

 Alcohol, effect on cilia, 36 



permeability of Spirogyra to, 68 

 AU-or-none, effect in frog's heart, 80 



muscle, 44, 54 

 Amoeba, electrical stimulation of, 32 



mercury model of, 26 

 Amoeboid movement, 32 

 Amylase, 24 



Antagonism of ions, 14, 34, 58, 88 

 Ants, method of handling, 8 

 Apparatus for electrical stimulation, 40 

 Arrhenius equation, 78 

 Azoblau, for perfusion of kidney, 70 



B 



Balanced solutions, 14, 34, 58, 88, 94, 96 



Beet cells, permeability of, 66 



Behavior, 2-10 



Benedict's test for sugar, 66 



Block, in frog's heart, 84 



Blood, determination of gases in, 96-104 



Blood-gas determinations, correction factors 



for, 112 

 Brain, of earthworm, diagram, 4 



of frog, 62 



influence on locomotion of earthworm, 2 

 sensitivity of earthworm, 4 

 Breathing movements, of frog, 76 



of gold fish, 78 



in man, 104 

 Bubbles, 10 

 Buffers, action of, 16 



tables forS0rensen's and Mcllvane's, 110 



Camphor amoeba, 30 



Carbon dioxide, content of blood, 96 



penetration in frog skin, 70 



production of muscle, 76 

 Catalase, 22 

 Catelectrotonus, 50 

 Cell division, models of, 28 

 Central nervous system, 58-64 

 Cerebrum of frog, 62 

 Charcoal, adsorption by, 18 

 Chemical trap action, in Paramecium, 6 

 Chromatophores, 34 



Chronaxie, augmentation of muscular, 52 

 Cilia, pharyngeal, in frog, 36 

 Ciliary movement, 34-40 

 Circulation, in frog's kidney, diagram, 72 



influence on fatigue of frog muscle, 48 

 Circumoesophageal commissures in crayfish, 



60 

 Circus movements, in slug, 8 

 Clam, heart of, 94 

 Cohesion, 12 

 Colloids, 18-22 

 Colpoda, model of, 28 



Coordination, mechanics of in earthworm, 2 

 Correction factors for blood-gas determina- 

 tions, 112 

 Crab, neuromuscular mechanism in claw, 54 

 Crayfish, central nervous system of, 60 



reciprocal inhibition in, 54 

 Crustacean claw, neuromuscular mechanism 

 in, 54 



heart, 94 

 Curare, 56, 92 

 Cyclosis, model of, 30 



D 



Dead space, 12 

 Decerebration, in frog, 62 

 Dehydrogenase, 22 

 Dialysis, 20 



113 



