CONTENTS OF VOL. II. 



PART IV. MORPHOLOGICAL DEVELOPMENT. 



CHAP. PAGE 



1. THE PROBLEMS OF MORPHOLOGY .... 3 



II. THE MORPHOLOGICAL COMPOSITION OF PLANTS . 10 

 III. THE MORPHOLOGICAL COMPOSITION OF PLANTS, 



CONTINUED ....... 28 



IV. THE MORPHOLOGICAL COMPOSITION OF ANIMALS . 77 

 V. THE MORPHOLOGICAL COMPOSITION OF ANIMALS, 



CONTINUED 99 



VI. MORPHOLOGICAL DIFFERENTIATION IN PLANTS . 113 



VII. THE GENERAL SHAPES OF PLANTS . . .119 



VIII. THE SHAPES OF BRANCHES . . . . .130 



IX. THE SHAPES OF LEAVES 137 



X. THE SHAPES OF FLOWERS . . . .146 



XL THE SHAPES OF VEGETAL CELLS . . . . 159 



XII. CHANGES OF SHAPE OTHERWISE CAUSED . .162 



XIII. MORPHOLOGICAL DIFFERENTIATION IN ANIMALS . 166 



XIV. THE GENERAL SHAPES OF ANIMALS . . .169 



XV. THE SHAPES OF VERTEBRATE SKELETONS . . 192 



XVI. THE SHAPES OF ANIMAL CELLS . . . .210 



XVII. SUMMARY OF MORPHOLOGICAL DEVELOPMENT . 213 



PART Y. PHYSIOLOGICAL DEVELOPMENT. 



I. THE PROBLEMS OF PHYSIOLOGY . "-.--""" . . 221 



II. DIFFERENTIATIONS BETWEEN THE OUTER AND IN- 

 NER TISSUES OF PLANTS . . . .226 



III. DIFFERENTIATIONS AMONG THE OUTER TISSUES OF 



PLANTS 243 



IV. DIFFERENTIATIONS AMONG THE INNER TISSUES OF 



PLANTS ....... 252 



V. PHYSIOLOGICAL INTEGRATION IN PLANTS . . 275 



vii 



