CONTENTS OF VOL. II. 



PART IV. MORPHOLOGICAL DEVELOPMENT. 



CHAP. PAGE 



I. THE PROBLEMS OF MORPHOLOGY . . . ... 3 



II. THE MORPHOLOGICAL COMPOSITION OF PLANTS .1 . 17 



III. THE MORPHOLOGICAL COMPOSITION OF PLANTS Continued . 37 



IV. THE MORPHOLOGICAL COMPOSITION OF ANIMALS ... 85 



V. THE MORPHOLOGICAL COMPOSITION OF ANIMALS Continued 111 

 VI. MORPHOLOGICAL DIFFERENTIATION IN PLANTS . . .128 



VII. THE GENERAL SHAPES OF PLANTS 134 



VIII. THE SHAPES OF BRANCHES . . . . ' . . .145 



IX. THE SHAPES OF LEAVES . . . . . ^ . . . . 152 



X. THE SHAPES OF FLOWERS .;.... . .161 



XL THE SHAPES OF VEGETAL CELLS . . . . . . 175 



XII. CHANGES OF SHAPE OTHERWISE CAUSED . . . .178 



XIII. MORPHOLOGICAL DIFFERENTIATION IN ANIMALS . . . 183 



XIV. THE GENERAL SHAPES OF ANIMALS . ... .186 



XV. THE SHAPES OF VERTEBRATE SKELETONS .... 209 



XVI. THE SHAPES OF ANIMAL-CELLS 228 



XVII. SUMMARY OF MORPHOLOGICAL DEVELOPMENT . . 231 



PART V. PHYSIOLOGICAL DEVELOPMENT. 



I. THE PROBLEMS OF PHYSIOLOGY 239 



II. DIFFERENTIATIONS BETWEEN THE OUTER AND INNER TIS- 

 SUES OF PLANTS 244 



III. DIFFERENTIATIONS AMONG THE OUTER TISSUES OF PLANTS . 251 

 IV. DIFFERENTIATIONS AMONG THE INNER TISSUES OF PLANTS . 272 



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