CONTENTS. 



32. The Stele ............ 116 



33. The Primary Vascular Tissue ...... . .121 



34. Histology of the Development of Secondary Members . . . 132 



35. The Formation of Secondary Tissue ....... 137 



36. Formation of Tissue in consequence of Injury ..... 155 



PART III. PHYSIOLOGY. 



37. Introductory 157 



CHAPTER I. GENEEAL PHYSIOLOGY. 



38. The Functions '. . . . . .157 



39. The External Conditions .159 



40. The Functions of the Tissues . ' . '.. " . ' . . .. . 162 



41. The Functions of the Members . " . . , ...... 167 



CHAPTER II. SPECIAL PHYSIOLOGY OF THE NUTRITIVE 

 FUNCTIONS. 



42. Absorption ;. v ,~ ...-..-_. . . 177 



43. Transpiration . . . . . . . ' ..7, . .179 



44. Distribution of Water and other Substances . . ;..-./. 181 



45. Metabolism 185 



CHAPTER III. SPECIAL PHYSIOLOGY OF MOVEMENT. 



46. Introductory 205 



47. Spontaneous Movements 206 



48. Induced Movements . . . . . . . . . . .211 



49. Localisation of Irritability 220 



50. Transmission of Stimuli 221 



51. Combined Effects of Different Stimuli 222 



52. Conditions of Movement . .223 



53. Mechanism of the Movements 224 



CHAPTER IV. SPECIAL PHYSIOLOGY OF REPRODUCTION. 



54. Introductory 227 



55. Vegetative Multiplication 228 



56. Spore-Reproduction 230 



PART IV. CLASSIFICATION. 

 Introductory 233 



GROUP I. THALLOPHYTA 237 



Class I. Algae 237 



Sub-Class I. Cyanophycese (Phycochromacese) .... 244 



Sub-class II. ChlorophyceaB 246 



Series I. Protococcoidese 248 



Order 1. Pleurococcacese 248 



2. Protococcacese . 248 



