xii VEGETABLE PHYSIOLOGY 



Conditions of formation of chlorophyll ; light, temperature, iron 

 Formation of carbohydrates by chloroplasts ; conditions of their 

 activity Theories of photosynthesis Relation of starch to the 

 process Bays of light made use of in photosynthesis ; researches 

 of Engelmann, of Tmiriazeff Inhibition of the chlorophyll appara- 

 tusFormation of organic substance in its absence . . 141-159 



CHAPTER XI 



THE CONSTRUCTION OF PROTEINS 



Complexity of the composition of protein ; its percentage composition 

 Classification of proteins ; albumins, globulins, metaproteins, pro- 

 teoses, peptones, proteins soluble in alcohol Synthesis of proteins 

 in plants ; various hypotheses Locality of protein construction in 

 the plant 160-170 



CHAPTER XII 



THE CONSTITUENTS OF THE ASH OF PLANTS 



Nature and composition of the ash Water-culture and the limitations 

 of its usefulness in the study of the ash - Classification of the 

 constituents of the ash The selective power of plants Sulphur 

 and phosphorus Potassium, magnesium, calcium, iron Sodium, 

 silicon, chlorine, bromine, iodine, manganese Accidental con- 

 stituents of the ash Relation of nitrogen and potassium to herbage 

 plants 171-182 



CHAPTER XIII 



OTHER METHODS OF OBTAINING FOOD 



Partial or entire absence of the constructive power Nutrition of 

 saprophytes Insectivorous plants Utricularia The pitcher- 

 plants Drosophyllum Pinguicula Dioneea Drosera 

 Digestion of substances by Fungi Commensalism Symbiosis 

 Mycorhiza Root parasites Parasitism among green plants and 

 Fungi 183-206 



CHAPTER XIV 



TRANSLOCATION OF NUTRITIVE MATERIALS 



Conditions of the constructive processes; surplus production and 

 storage Necessity of circulation of food material in consequence 

 of localisation of construction, and intermittence of consumption 



