INDEX 



139 



PALLADIUM black, 64, 65. 



Pea, 58, 74, 77, 84, 85, 100, 102, 123, 



125. See also Pisum sativum. 

 Pelargonium, 79. 



zonale, 52. 

 Penicillium, 57. 



chrysogenum, 92. 

 Pentosane, 87. 

 Pentose, 37. 

 Perhydridase, 67. 

 Peroxidase, 67, 94, 95, 96, 104. 

 Petunia, 127. 

 Phaeophytin, 47. 



Phalaris arundinacea, 28. 

 Phaseolus, 28. 



multiflorus, no. 

 Photocatalyst, 30, 48. 

 Phy corny ces, 126. 

 Pine apple, 99. 



Pisum sativum, 122. See also Pea. 

 Pleurococcus, 57. 

 Pneumococcus, 69. 

 Polygonum Sacchaliense, 26. 



weyrichii, 26. 



Pollination, effect of, on respiration, 79. 

 Polymerization of formaldehyde, 30, 42, 



49. 



Populus, 2, 33. 

 Potamogeton, 22. 

 Potassium, radioactivity of, 31, 52. 



effect on protein synthesis of, 51. 



hyponi trite, 53. 



nitrate reduction of, to potassium 



nitrite, 53. 

 Potato, 37, 67, 74, 76, 78, 82, 83, 87, 90, 



98, 99. 



Predetermination, 3, 23, log, 120, 121. 

 Primula, 33. 

 Primula malacoides, 131. 

 Prochromogen, 104. 

 Protein, hydrolysis of, 58 ; synthesis of, 



50-58 ; synthesis in dark, 56 ; as 



respiratory material, 87. 

 Protocatechuic acid, 96, 97. 

 Primus laurocerasus, 16, 23, 25, 79. 



See also Cherry laurel. 

 Pyridine, synthesis of, 55. 

 Pyrocatechol, 96. 

 Pyruvic acid, 98, 105. 

 Pyrrole, synthesis of, 55. 

 Pythiacystcs atrophthora, 122. 



QUININE hydrochloride, effect on re- 

 spiration, 103. 

 Quinone, 64. 



RADIOACTIVITY of potassium, 31, 52. 

 Radium emanation, effect upon aqueous 



solutions of carbon dioxide, 31. 

 Raphidium, 57. 

 Rate of gaseous diffusion, 19. 

 Ratio O 2 /CO a , 14. 



Ratio CO 2 /O 2 , 41, 72, 73, 79. 



CO a /N 2 , 88. 



C/N, 130. 



Residual carbon dioxide, 78. 

 Respiration of bulked grain, 90, 91. 



pigments, 103. 

 Respiratory carbon dioxide, 17. 



index, 75. 



quotient, 41, 72, 73, 79. 

 Ricinus, 2. 



Rubus, 33. 



S " CURVES, no, 114. 

 Saccharomyces, 50. 

 Sagittaria, 52. 

 Salicylic alcohol, 66. 



aldehyde, 66. 



Salts, effect on respiration, 91, 



Salvia, So. 



Salvinia, 131. 



Sambucus, 52. 



Sarcina, 69. 



Schardinger reaction, 66. 



Sinapis, 41, 106. 



Snowdrop, 88. See also Galanthus 



~ nivalis. 



Spirogyra, 41. 



Sprouting of potato, 74. 



Stomates, 17, 22. 



Succulent plants, 77. 



Sucrose, 36, 37. 



Sugar as respirable material, 86. 



beet, 36. 



Sunflower, 57, 58, 115. See also 



Helianthus annuus. 

 Sweet corn, 99. 

 Swelling, I, 2. 



TANNIN, 80. 



Temperature, effect on assimilation, 23. 



growth, I2i. 



respiration, 81. 



coefficient of chemical reactions, 23. 

 Tilia, 33. 



europaa, 38. 

 Tradescantia, no. 

 Traumatic stimulation, 78. 

 Tropaolum, 36, 38, 39, 79, 80, 89. 



ULTRA-VIOLET light, effect of on en- 

 zymes, 57. 



proteins, 57. 



solutions of carbon dioxide, 



48. 



rays in assimilation, 27-29. 



VAN'T HOFF'S Law, 23, 25, 122. 

 Vaucheria, 10, 38. 

 Vetch, 87. 



