INDEX. 



Heart, action current of, 37 

 action of frog's, 82, 83 



of rabbit's, 98 

 dissection of frog's, 82 



of rabbit's, 97 

 excision of, 83 

 extrinsic nerves of, 86, 87 

 sounds, 109 

 valves, action of, 101 

 Heart-beat, action of drugs on, 88 

 direct observation of, 82, 98 

 graphic record of, 84 

 influence of temperature on, 83, 



85, 118 



nerve action on, 87, 100 

 reflex inhibition of, 88 

 Stannius' experiment, 95 

 Heart muscle, action of salts on, 94 

 compensatory pause, 97 

 maximal response of, 96 

 refractory period, 97 

 Helmholtz, ophthalmoscope of, 192 

 Hemisection of spinal cord, 52 

 Hemorrhage, effect on blood press- 

 ure, 116 



Holmgren, test for color vision, 189 

 Hooke's law, 21 

 Hyperopia, 190 

 Hypoglossal nerve, 122 



Images, retinal, 183 



Sanson's, 187 



Impressions, visual, duration of, 188 

 Impulse, nerve, velocity of, 24 

 Induced currents, study of, 16, 17 

 Inductorium, 16 

 Infusoria, 6 



Inhibition of heart-beat, 87, 88 

 Internal secretion, 140 

 Interrupters, 18 

 Intestines, digestion in, 134 

 Involuntary muscle, 45 



Iodine, test for dextrin, 126 



for glycogen, 140 



for starch, 125 

 lodophilia, 65 

 Irritability of nerve and muscle, 22 



and effect of constant cur- 

 rent on, 38 

 Isometric contraction of muscle, 32 



spring, graduation of, 33 

 Isotonic contraction of muscle, 33 



Judgments, visual, 187 



Kanthack and Hardy, classification 



of leucocytes, 66 

 Kathelectrotonus, 40 

 Kathode, 14 

 Kathodic opening contraction, 43 



closing contraction, 43 

 Kidney volume, 167 



volume and blood pressure, 168 

 volume and depressor stimula- 

 tion, 1 68 



volume, effect of vagus stimula- 

 tion on, 1 68 



Kronecker, apparatus for ciliary mo- 

 tion, 9 



interrupter, 18 

 perfusion of frog's heart, 93 

 water pen, 108 



Lachrymal ducts, 178 



glands, 178 

 Laking of blood, 58 

 Latent period of stimulation, 123 

 Lenses, 179 



numbering of, 191 

 Leucocytes, classification of, 66 



differential count of, 68 



enumeration of, 61 



migration of, 81 



of frog's blood, 6 



[201] 



