xil CONTENTS. 



for the presence of starch, 143. Green parts of plants form 

 starch when exposed to the light, 147. Starch is formed 

 only in the green parts of plants, 148. Translocation of 

 starch, 149. Starch in other parts of plants than the leaves, 

 151. Form of starch grains, 153 page 59 



CHAPTER XL 



CHLOROPHYLL AND FORMATION OF STARCH. 



Fungi cannot form starch, 155. Etiolated plants cannot convert 

 carbon, 156. Chlorophyll and chloroplasts, 157. Form of 

 the chlorophyll bodies, 158. Chlorophyll is a pigment which 

 resides in the chloroplast, 159. Chlorophyll absorbs energy 

 from sunlight for carbon conversion, 160. Rays of light 

 concerned in carbon conversion, 161. Starch grains formed 

 in the chloroplasts, 162. Carbon conversion in other than 

 green plants, 164. Influence of light on the movement of 

 chlorophyll bodies, 165 page 65 



CHAPTER XII. 

 NUTRITION; MEMBERS OF THE PLANT BODY. 



Nutrition of liverworts, 167. Riccia, 167. Marchantia, 168. 

 Frullania, 169. Nutrition in the mosses, 170. The plant 

 body, 171. Members of the plant body, 172. Stem series, 

 173. Leaf series, 174. The root, 175 page 70 



CHAPTER XIII. 



GROWTH. 



Growth in mucor, 177. Formation of the gonidia, 178. The 

 gonidia absorb water and increase in size before germinat- 

 ing, 179. How the gonidia germinate, 180. The germ tube 

 branches and forms the mycelium, 181. Growth in length 

 takes place only at the end of the thread, 182. Proto- 

 plasm increases by assimilation of nutrient substances, 183. 

 Growth of roots, 184. Roots of the pumpkin, 185. The 

 region of elongation, 186. Movement of the region of the 

 greatest elongation, 187. Formative region, 188. Growth 

 of the stem, 189. Force exerted by growth, 190. Grand 

 period of growth, 191. Energy of growth, 193. Nutation, 

 194 page 75 



