CONTENTS. 



CHAPTER I. 



PAGE 



Ax INTRODUCTION TO THE STUDY OF GROWTH ... 21 



Problems Cells Egg-cell Fertilisation Cell-multi- 

 plication and cell- enlargement Number of cells in 

 man Nutrition of cells Specialisation Germ-layers 

 Methods of growth Cells not simple Theory of 

 development Relations between nucleus and cyto- 

 plasm Entire larvae from fractions of the egg 

 Multiple embryos from a single egg Size of animals 

 Growing cells Specialisation antagonistic to regenera- 

 tion Longevity Rate of growth Onset of decay 

 Two habits of growth Cell-multiplication occurs early 

 Time limitations of development Size in geological 

 time Conditions influencing size Rhythm of growth 

 Summary Outline of succeeding chapters. 



CHAPTER II. 

 INCREASE ix THE WEIGHT OF THE ENTIRE BODY ... 45 



Terms Divisions of the life cycle Growth and develop- 

 ment Growth of the entire body Variations in the 

 specific gravity of the different systems Proportion of 

 water Weight the best measure of growth Change in 

 the proportions of the body with age Data on weight 

 Corrections for clothing Descriptions of curves 

 Absolute increase in weight Composition of statistics 

 General and individual methods Effects of illness 

 Influence of environment Influence of size attained on 

 subsequent growth Weight and stature of first-born 

 Growth before birth Determination of weight at birth 

 Increase during the first year Rate of growth Unit 

 of energy. 



