viii CONTENTS 



PACK 



The Root 27 



Trichomes 29 



Emergences 29 



Reproductive Parts 30 



Morphology and Classification 32 



Bibliography 33 



CHAPTER m 

 THE PLANT-CELL 



Physical Properties of Protoplasm 34 



Differentiation of Protoplast 35 



Physical Constitution of Protoplasm 36 



Ultimate Structure of Protoplasm . 37 



Chemical Composition of Protoplasm 38 



Physiological Properties of Protoplasm 39 



Nutrition of Protoplasm 42 



Irritability 42 



Reproduction 44 



The Plant-cell 44 



Structure of Nucleus 47 



Chromatophores (Plastids) 48 



The Cell-wall 50 



Inclusions of the Protoplast .63 



Forms of Cells . . . ., 56 



Cell-formation . 60 



Karyokinesis 60 



Budding 63 



Internal Cell-division 64 



Free Cell-formation 64 



Conjugation 64 



Bibliography 65 



CHAPTER IV 

 CLASSIFICATION ; TUB SIMPLEST PLANT-FOKMS 



The Simplest Organisms 67 



Flagellata 67 



Myxomycetes 68 



Schizophyta 71 



BACTERIA (SCHIZOMYCETES) 73 



Reproduction of Bacteria 74 



Biology of Bacteria 74 



Aerobic and Anaerobic Bacteria .77 



Classification of Bacteria . 78 



