Index 



147 



Laukent, 67, 71. 



Leaves: absorption by, 68, 103; exuda- 

 tion from, 99 : guttation or, 74 ; permea- 

 bility of, 71. 



Leobthins, 81. 



Lehman, 69. 



Leitzmann, 116. 



Lemna, permeability of, 76. 



Lice, reversal of tropism in, 141. 



LlDFOESa, 54. 



LlEBEEMANK, 18. 

 LUilACKS, 69. 



Liquids: absorption of, 118: diffusion 



of, 12, 13. 

 Livingston, 132, 138, 143. 

 LOb, 57. 

 LoEB, 53, 74, 128, 129, 139. 



LOEB, FiSCHBE, AND NEILSON, 130. 



LupiNUS: in osmotic solutions, 130; so- 

 lutes of, 84. 



MAcDonoAL, 69, 119. 



Maquenne, 74, 84, 85. 



MassAkt, 61, 140, 141. 



Matedohot and Molliaed, 70, 75. 



Mattee: nature of, 3; states of, 6. 



Mayee, 84. 



Medium, influence of, 124. 



Meeebdeg, 36, 82. 



Membranes : cellulose, 51 ; copper ferro- 

 cyanid, 82. 



Mbmbeanes: protoplasmic, 49; action 

 of, 80. 



Meecuric chloeid: effect on permea- 

 bility, 74 : penetrating power, 68. 



Methyl blue, penetrating power of, 66, 

 77. 



Methyl oyanid, in plasmolysis, 63. 



Methyl VIOLET, penetratingpower of, 66. 



Mimosa, pulviui of, 77. 



MOHL, 98. 



Molds, bursting of, 54. 



Molisch, 65, 72, 75, 102, 103, 106. 



Morgan, 129. 



moese and hoen, 36. 



MucoE, exudation from, 99. 



Mt»LLBR, 116. 



Muscle, permeability of, 74. 



Myriotonie, 59. 



Naccaei, 18. 



Nathansohn, 78. 



Nectaries : artificial, 99 ; conditions for 



secretion of, 101 ; theory of, 96. 

 Neenst, 18. 



Neenst-Palmbe, 37, 38, 40. 

 Nitrates, test for, 65. 

 Noll, 54. 



Nostoc, permeability of, 70. 



Nuclei: frozen, dried, etc., 76; in osmo- 

 tic solutions, 128. 



Oltmanns, 74, 102. 



Onion : permeability of, 78 ; solutes of, 83. 



Ono, 69, 125. 



Osmotaxis, 140. 



Osmotic pressure: in general, 28; de- 

 monstration of, 32; of electrolytes, 27 ; 

 of non-electrolytes, 25; indirect meas- 

 urement, by freezing-point, 37 ; by boil- 

 ing-point, 38; by vapor tension, 39; 

 calculation of, for electrolytes, 42; for 

 non-electrolytes, 41; compared to dry- 

 ing, 141. 



Ostwald, 42. 



Ostwald-Walker, 16, 40, 42. 



Overton, 63, 71, 81. 



Oxygen : absorption of, 115 ; effect of, 

 on permeability, 78 ; penetrating power 

 of, 70. 



PAEAM(ECIA,'permeability of, 63. 



Parthenogenesis : 129 ; by cold, 143. 



Pear, pressure of sap of, 86. 



Peas, solutes of, 84. 



Pbnicillium, in osmotic solutions, 131. 



Permeability of protoplasm : 60, 64, 

 67, 68, 69, 70, 118; outward, 63, 71; varia- 

 tions in, 72 ; effect of on turgidity, 86. 



Pfeffbr, 35, 50, 55, 64, 66, 68, 77, 78, 104, 105, 

 120. 



Phaseolus: in osmotic solutions, 130, 

 138 ; permeability of, 65, 78 ; solutes of, 

 83. 



Phenol, in plasmolysis, 63. 



Phloeoglucin, in plasmolysis, 63. 



Phosphoeic acid, from roots, 72. 



Photosynthesis, 117. 



Phytolocca, penetrating power of sap 

 of, 98. 



PiCEIC ACID, 110. 



PiLOBOLUB, bursting of, 54. 



Pisum: in osmotic solutions, 130, 138; 

 solutes of, 83, 84. 



Pitea, 103. 



Plant lice, reversal of tropism in, 142. 



Plasmolysis : in general, 54, 60 ; by cold, 

 75 ; of bacteria, 58 ; effect of on growth, 

 88 ; on permeability, 74. 



Platinum chlorid, 65. 



Poisons, permeating power of, 68. 



Pollen grains, bursting of, 54. 



POLYGORDIUS, reversal of tropism in, 

 139. 



Polimoephism : in Basidiobolus, 137 ; in 

 fungi, 138 ; in Stigeoclonium, 132. 



Potassium : absorption of, 67, 120 ; pene- 

 trating power of, 69. 



Potassium chloeid, in turgor, 83. 



