INDEX 



147 



LAURENT, 67, 71. 



LEAVES: absorption by, 68, 103; exuda- 

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

 bility of, 71. 



LECETHINS, 81. 



LEHMAN, 69. 



LEITZMANN, 116. 



LEMNA, permeability of, 76. 



LICE, reversal of tropism in, 141. 



LIDFORSS, 54. 



LlEBERMANN, 18. 

 LlLIACEJE, 69. 



LIQUIDS: absorption of, 118; diffusion 

 of, 12, 13. 



LIVINGSTON, 132, 138, 143. 



LOB, 57. 



LOEB, 53, 74, 128, 129, 139. 



LOEB, FISCHER, AND NEILSON, 130. 



LUPINUS: in osmotic solutions, 130; so- 

 lutes of, 84. 



MACDOUGAL, 69, 119. 



MAQUENNE, 74, 84, 85. 



MASSART, 61, 140, 141. 



MATRUCHOT AND MOLLIARD, 70, 75. 



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



MAYER, 84. 



MEDIUM, influence of, 124. 



MEERBURG, 36, 82. 



MEMBRANES : cellulose, 51 ; copper ferro- 

 cyanid, 82. 



MEMBRANES: protoplasmic, 49; action 

 of, 80. 



MERCURIC CHLORID: effect on permea- 

 bility, 74; penetrating power, 68. 



METHYL, BLUE, penetrating power of, 66, 

 77. 



METHYL CYANID, in plasmolysis, 63. 



METHYL, VIOLET, penetratingpower of, 66. 



MIMOSA, pulvini of, 77. 



MOHL, 98. 



MOLDS, bursting of, 54. 



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



MORGAN, 129. 



MORSE AND HORN, 36. 



MUCOR, exudation from, 99. 



MULLER, 116. 



MUSCLE, permeability of, 74. 



MYRIOTONIE, 59. 



NACCARI, 18. 



NATHANSOHN, 78. 



NECTARIES: artificial, 99; conditions for 

 secretion of, 101 ; theory of, 96. 



NERNST, 18. 



NERNST-PALMER, 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. 



PARAM03ClA,*permeability of, 63. 



PARTHENOGENESIS : 129 ; by cold, 143. 



PEAR, pressure of sap of, 86. 



PEAS, solutes of, 84. 



PENICILLIUM, in osmotic solutions, 131. 



PERMEABILITY OP PROTOPLASM: 60, 64, 

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

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



PFEFFER, 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. 



PHLOROGLUCIN, in plasmolysis, 63. 



PHOSPHORIC ACID, from roots, 72. 



PHOTOSYNTHESIS, 117. 



PHYTOLOCCA, penetrating power of sap 

 of, 98. 



PICRIC ACID, 110. 



PILOBOLUS, bursting of, 54. 



PISUM: in osmotic solutions, 130, 138; 

 solutes of, 83, 84. 



PITRA, 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. 



POLIMORPHISM : in Basidiobolus, 137 ; in 

 fungi, 138 ; in Stigeoclonium, 132. 



POTASSIUM : absorption of, 67, 120 ; pene- 

 trating power of, 69. 



POTASSIUM CHLORID, in turgor, 83. 



