Vlll CONTENTS. 



CHAPTER II. 



ASSIMILATION OF CARBON. 



Section A. Formatioa of starcb. 24. Sachs' Iodine method. 

 25. Sohimper's method. 26. Variegated leaves. 27. Disappear- 

 ance of starch in darkness. 28. Effect of dull light. 29. Local 

 effect. 30. Gardiner's experiment. 31. Bays of different refran- 

 gibility. 32. Terrestrial leaves under water. 33. Excess of CO2. 

 34. Plants deprived of COj. 35. Temperature and assimilation. 

 36. -Gain in weight. 37. Translocation. 38. Assimilation of 

 sugar. 39. Do., formaldehyde. 40. Leucoplasts. pp. 17— 30. 



Section B. Evolution of oxygen. 41. Bubbles of gas. 

 42. Light of varying intensity. 43. Dependence on presence of COj. 

 44. Temperature and gas evolution. 45. Chloroform. 46. Co- 

 loured lights. "^47. Collection of gas evolved. 48. Engelmann's 

 blood method. 49. Phosphorus method. 50. Deh6rain's method. 

 51. Gas analysis, Pfeffer's method. 52. Gas analysis, Winkler- 

 Hempel apparatus. 53. Engelmann's bacterial method. 54. Dif- 

 fusion of gas through cuticle pp. 30— 43. 



Section C. Reactions of cUoropbyll and of some otber pig- 

 ments. 55. Separation by benzene, ether, olive oil. 56. Action 

 of light. 57. Aeration and effect of light. 58. Action of acid. 

 59. Action of copper-salts. 60. Stability of the copper compound. 

 61. Spectroscopic examination. 62. Bed colour of Eicinus, Coleus 

 &a. 63. Plorideee. 64. Brown sea-weeds . . pp. 43 — 46. 



Section D. Production of cbloropbyll, etiolation, sun- smd 

 sbade-leaves. 65. Appearance of the green colour. 66. Etiolin 

 and light. 67. Pinus. 68. Chlorophyll formation and tempera- 

 ture. 69, 70. Do. and oxygen. 71. Do. and iron salts. 

 72. Form of etiolated plants. 73. Sun- and shade-leaves. 



pp. 46— SO. 



CHAPTER III. 



FURTHBE EXPERIMENTS ON NUTRITION. 



Section A. Water-culture. 74. Method. 75. Potassium 



salts necessary. 76. Phosphoric acid necessary. 77. Experi-: 



ments with Lemna. 78. Calcium oxalate formation. 79. Nitrate 



reaction pp. 51 — 60. 



