xli CONTENTS. 



CHAP. PAGE 



V. PHYSIOLOGICAL INTEGRATION IN PLANTS 292 



VI. DIFFERENTIATIONS BETWEEN THE OUTER AND INNER TISSUES 



OF ANIMALS 299 



VII. DIFFERENTIATIONS AMONG THE OUTER TISSUES OF ANIMALS . 309 



VIII. DIFFERENTIATIONS AMONG THE INNER TISSUES OF ANIMALS . 323 



IX. PHYSIOLOGICAL INTEGRATION IN ANIMALS . . . .373 



X. SUMMARY OF PHYSIOLOGICAL DEVELOPMENT .... 384 



X A . THE INTEGRATION OF THE ORGANIC WORLD .... 396 



PAET VL LAWS OF MULTIPLICATION. 



I. THE FACTORS ......... , .411 



II. A PRIORI PRINCIPLE . . .... .,...- .417 



III. OBVERSE A PRIORI PRINCIPLE . . . . , . 424 



IV. DIFFICULTIES OF INDUCTIVE VERIFICATION . . , , .432 



V. ANTAGONISM BETWEEN GROWTH AND ASEXUAL GENESIS . 439 



VI. ANTAGONISM BETWEEN GROWTH AND SEXUAL GENESIS . . 448 



VII. THE ANTAGONISM BETWEEN DEVELOPMENT AND GENESIS, 



ASEXUAL AND SEXUAL .461 



VIII. ANTAGONISM BETWEEN EXPENDITURE AND GENESIS . . 467 



IX. COINCIDENCE BETWEEN HIGH NUTRITION AND GENESIS . . 475 



X. SPECIALITIES OF THESE RELATIONS . . ... 486 



XI. INTERPRETATION AND QUALIFICATION . . . . . 497 



"XII. MULTIPLICATION OF THE HUMAN RACE 506 



XIII. HUMAN POPULATION IN THE FUTURE 522 



APPENDICES. 



A. SUBSTITUTION OF AXIAL FOR FOLIAR ORGANS IN PLANTS . . 541 

 B. A CRITICISM ON PROF. OWEN'S THEORY OF THE VERTEBRATE 



SKELETON 548 



C. ON CIRCULATION AND THE FORMATION OF WOOD IN PLANTS . . 567 



D.ON THE ORIGIN OF THE VERTEBRATE TYPE 599 



D 8 . THE ANNULOSE TYPE 602 



E. THE SHAPES AND ARRANGEMENTS OF FLOWERS . . . .608 

 F. PHYSIOLOGICAL (OR CONSTITUTIONAL) UNITS . . . .612 



G. THE INHERITANCE OF FUNCTIONALLY-CAUSED MODIFICATIONS . 618 



