CONTENTS OF VOL. II, 



PART IV. MORPHOLOGICAL DEVELOPMENT. 



Cl'AP. fAOI 



I. THE PROBLEMS CF MORPHOLOGY ... ... 3 



II. THE MORPHOLOGICAL COMPOSITION OF PLANTS ... 10 

 III. THE MORPHOLOGICAL COMPOSITION OF PLANTS, CON- 

 TINUED ... :.. ... ... 28 



IV. THE MORPHOLOGICAL COMPOSITION OF ANIMALS ... '77 

 V. THE MORPHOLOGICAL COMPOSITION OF ANIMALS, CON- 

 TINUED ... ... ... ... 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 ... ... ... 140 



XI. 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 



IVII. SUMMARY OF MORPHOLOGICAL DEVELOPMENT ... 213 



PART V PHYSIOLOGICAL DEVELOPMENT. 



I. THE PROBLEMS OF PHYSIOLOGY... ... ... 221 



II. DIFFERENTIATIONS BETWEEN THE OUTER AND INNER 



TISSUES OF PLANTS ... ... ... 226 



Hj. DIFFERENTIATIONS AMONG THE OUTER TISSUES OF 



PLANTS ... ... ... ... 243 



IV. DIFFERENTIATIONS AMONG THE DfNER TISSUES OF 



PLANTS .,, ... ... . 552 



