X 



LECT. 



HISTORY OF BOTANY 



PAGE 



Progress in Cryptogamic Morphology — Pro- 

 gress IN Cytology — The Origin and Develop- 

 ment OF Tissues — The Stele Theory — Advances 

 IN Physiology — Absorption of Water and 

 Salts — Transpiration . . . .161 



IX. The Ascent of Sap — The Absorption of Minerals 

 — The Absorption of Nitrogen — The Problem 

 OF Photosynthesis . . . .189 



X. Metabolism — Enzymes — Assimilation of Plasta 

 — Katabolism — Growth — SOxMe Advances in 

 Botanical Knowledge since 1900 — Mendelism 213 



XI. Modern Views on the Composition of Chloro- 

 phyll — The Functions of Chlorophyll — 

 Energy and Photosynthesis — Sensitivity and 

 Movement — Ecology 



XII. The Pteridosperms and the Seed — Bennettites 

 AND the Primitive Flower — The Phylogeny of 



THE ANGIOSPERMAE 



Conclusion . 

 Bibliography 

 Explanation of Table 

 Index 



234 



250 

 261 

 263 

 267 

 271 



