x HISTORY OF BOTANY 



LECT. FACE 



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 SOME 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 . . . .234 



XII. THE PTERIDOSPERMS AND THE SEED BENNETTITES 

 AND THE PRIMITIVE FLOWER THE PHYLOGENY OF 

 THE ANGIOSPERMAE . . . .250 



CONCLUSION . . . . . .261 



BIBLIOGRAPHY . . . .263 



EXPLANATION OF TABLE . . . .267 



INDEX . 271 



