148 



Diffusion and Osmotic Pkessuee 



Potassium nitbate : absorption of, 120 ; 

 in plasmolysis, 56, 61; ia turgor, 83; 

 penetrating power of, 65, 68, 74, 77. 



PEE89UEE: exudation, 102; gas, 9; os- 

 motic (see Osmotic pressure). 



Peotoplasm, 49. 



Peotoplasmic membeanes, action of, 80. 



PUEIEWITCH, 78. 



QuEKCDS, copper in, 69. 



Quincke, 82. 



Racibokski, 132, 137, 138. 



Eeinhaedt, 88. 



Eepeoddction, in osmotic solutions, 138. 



BiCHABDS, 68. 



ElCHTEE, 139. 



ElSB OF WATBE, 107. 



EOOT HAIES, exudation from, 75. 



Roots, permeability of, 69. 



ROTHEBT, 140. 



Salts, inorganic, penetrating power of, 



67, 71. 

 Sambucus, permeability of, 76. 

 Sap : cell, 52 ; expressed, conductivity of, 



85. 

 Saegent, 128. 

 schefteb, 18. 

 Schnbidek, 112. 

 schwendbnee, 76. 

 Seeds, in osmotic solutions, 130, 131. 

 Selectivb powee, 118. 

 SiPHONKffl, bursting of, 54. 

 Skeetschlei, 69. 

 Slosson, 131. 



Sodium, penetrating power of, 69. 

 Sodium chloeid : in plasmolysis, 61 j 



Senetrating power of, 68, 74; in me- 

 ium, 137. 



Sodium niteate: absorption of, 120; 

 penetrating power of, 79. 



Solids, absorption of, 118 ; diffusion of, 

 14. 



SoLANUM, absorption by, 69. 



Solutes: absorption of, 115: active, na- 

 ture of, 83 ; transmission of, 120, 



Solution, Knop's, 132. 



Solutions; defined, 16; properties of, 

 124 ; molecular, 21 ; normal, 21 ; of gases 

 in liquids, 17 ; of liquids in liquids, 16; 

 of solids in liquids, 18; terminology 

 for, 20. 



Solution theoev of semipeemeabil- 

 ITY, 80. 



Spebms, in osmotic solutions, 129, 139. 



Spxeoqyea : cold plasmolysis of, 75, 141 ; 

 permeability of, 62, 65. 68. 



Stahl, 140. 



Stanqe, 84, 130. 



Stbntoe, cold plasmolysis of, 75, 143. 



Stevens, 69. 



Stiohococcus, permeability of, 70. 



Stiqeoclonium ; drying out of, 143; in 

 osmotic solutions, 132, 138; zoospores 

 in solutions, 139. 



Stomata, 93. 



Steasbueqee, 110. 



Steatiotes, permeability of, 62. 



Steongylocentutus, eggs of, 129. 



SuOEASE, penetrating power of, 71. 



SuGAE, CANE: in plasmolysis, 61; pene- 

 trating power of, 65. 



Sunflowee, permeabilty of, 65. 



SuppOET, mechanical, by turgidity, 87. 



SuEEOUNDING MEDIUM, influence of, 124. 



sutheest, 85. 



Tamman, 36. 



Temperatuee: influence of, on absori>- 

 tion, 95; influence of, on permeabilty, 

 75 ; influence of, on turgor, 77. 



Tension, diffusion, of solvent, 30. 



Theoeies: of matter, 3; of semipermea- 

 bility, 82. 



Thunbeegia, permeability of, 71. 



Thuya, transpiration of, HI. 



Tonie, 59. 



Tonoplast, 52, 53, 80, 82. 



Teadescantia, permeability of, 56, 62, 

 76. 



Tbansmission : of solutes, 115, 120; of 

 water, 95. 



Teanspieation, 93, 96. 



Teanspieation stbbam, 107. 



Teaube, 50. 



Teopism, reversal of, 139. 



Teue, 68, 137. 



Tuegescence, 52. 



Tdegidity: nature of, 49, 52, 53; main- 

 tenance of, 86, 121 ; relation of, to activ- 

 ity, 87. 



TuEQOE, 52, 55, 74. 



TUENIP, pressure of sap of, 85. 



TJbba: in plasmolysis, 62; penetrating 

 power of, 77, 79. 



Vacuole, 52. 



Vandeevelde, 131. 



Van Rysselbeeghb, 76, 134. 



Van't Hoff, 25, 37, 40. 



Vegetable mabeow, pressure of sap of, 

 85. 



Vesque, 95. 



VICIA : nectaries of, 79 ; roots of, 65. 



Violet, methyl, penetrating power of, 

 66. 



Voigtlandee, 18. 



Von Matenbueg, 67, 83, 118. 



Walden, 36. 



