INDEX 



Rontgen rays, 72 ; V. spiralis, cardinal 

 temperatures for streaming in, 59 ; de- 

 tailed action of heat on, 65. 



Velocity, distribution of, in streaming cell, 

 114, 115. 



Velten, 3, 8, 34, 35, 45, 66, 88, 107 ; on 

 artificial streaming, 99, no; influence 

 of temperature on streaming, 59; on 

 movements of chloroplastids, 1 06. 



Veratrin, action of, on muscle, 81, 82 ; on 

 plants, 83 ; nitrate, 84 ; penetration 

 of, 85. 



Viscosity, 16; of albuminous solutions, 18 ; 

 influence of coagulation of, 22 ; of 

 concentration and temperature, 16; of 

 molecular weight and constitution, 17. 



Von Mohl, 2. 



Vorticella, influence of temperature on 

 movements of, 62. 



Water, influence of, on respiration, 14 ; on 

 streaming, 12 ; percentage of, in proto- 

 plasm, 12, 13 ; movement of, in stream- 

 ing plasma, 109. 



Wigand, 3. 



Wood, magnetic properties of, 47. 



Work done in streaming, 27 ; calculation 

 of, from coefficient of friction, 30 ; 

 relation of, to consumption of energy, 



31- 

 Wound-reaction, propagation of, 105. 



