INDEX 



115 



M 



Make and break shocks, 42 

 Maxwell's example of surface tension, 10 

 McLvaine's buffers, table of, 110 

 Melanophores, 34 

 Membrane, of oxide on metal, 64 

 Methylene blue, oxidation of, in frog's 

 muscle, 68 



reduction of, in milk and yeast, 22 

 Milk, drhydrogenase, 22 

 Minimal area configurations, 10 

 Mitosis, model of, 28 

 Models of living systems, 26-32 

 Molluscan heart, 94 

 Motor points in arm, 50 

 Muscle, striated, model of, 42 



tension in earthworm, 6 

 Muscles in frog's leg, diagram of, 44 

 Muscular movement, 40 

 Mussel, heart of, 96 



N 



Narcosis in cilia, 36 



Needle, floating, 10 



Negative surface tension, 12 



Nerve cord, function in cray fish, 62 



earthworm, 2 

 Nerve, model of, 64 



plexus, in earthworm, 6 

 Notonecta, accessory hearts in, 92 



Perfusion, of kidney, 70 



of liver, 76 

 Pericardium, in turtle, 86 

 Peristalsis, 2 

 Permeability, 64-76 



and solubility, 66 

 Peroxidase, 22 



Phenol red, for perfusion of kidney, 70 

 Phototropism, in earthworm, 2 



in meal worm and sow bug, 8 



in slug, 8 

 Plasmogeny, 26-32 

 Plasmolysis, 68 

 Pneumograph, 104 

 Potato, catalase in, 22 

 Precipitation of AS2S3, 20 

 Protoplasmic streaming, model of, 28 



R 



Rate of neural transmission in frog's sciatic, 



50 

 Reciprocal inhibition, in earthworm, 6 

 Red fibres in muscle, 52 

 Reflex action, 60 



activity of decerebrate frog, 64 

 Refractory period in frog's heart, 82 

 Respiration, 104-108 



in frog, 106 



in unicellular organisms, 108 



scheme, 106 

 Rheoscopic frog, 46 

 Righting response, in earthworm, 4 



Octopus, mercury, 26 



Opposed beams of light, orientation between, 

 8 



Osmosis, 30 



Osmotic effects on muscle, 46 

 pressure of living cells, 68 



Oxidase, 22 



Oxidation, 22 



Oxygen, capacity of blood, 102 



dissociation curve of blood, 102 

 penetration of, into muscle, 68 



Pacemaker in frog's heart, 78 

 Paramecium, chemical trap action in, 6 



galvanotropism in, 38 



permeability of, 68 



Salt effects on chromatophores, 34 

 Sea urchin eggs, model of, 66 



water, as a balanced solution, 14, 34, 58, 

 94 

 Sensitivity, chemical, in earthworm, 4 

 Skin, permeability of, to CO2 in frog, 70 

 Smooth muscle, contraction of, 6, 52 

 Solubility and the colloidal state, 20 



permeability, 66 

 S0rensen's buffers, table of, 110 

 Spirogyra, electrical stimulation of, 32 



permeability changes during stimula- 

 tion, 64 



permeability of, 68 



plasmolysis of, 68 

 Sponge, model of, 30 



