xi VEGETABLE PHYSIOLOGY 
PAGE 
—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—Rays of light made use of in photosynthesis; researches 
of Engelmann, of Tmiriazeff—Inhibition of the chlorophyll appara- 
tus—Formation 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 ‘ : J . 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 — Dionea — Drosera — 
Digestion of substances by Fungi—Commensalism—Symbiosis — 
Mycorhiza—Root parasites—Parasitism among green plants and 
Fungi . 2 ‘ 4 é ‘ 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— 
