TABLE OF CONTENTS. 



Pagi 



Preface iii 



Part I. Build, its definition and its ontogeny 



A. General considerations 



Types of variation in build A 



The measurement of build 1 



Ontogenetic I 



Adult 5 



Sexual differences in build 5 



Racial differences in build 7 



Geographical differences in build 7 



B. The ontogeny of build 8 



Materials and methods B 



The ontogenetic curve of build 11 



Later ontogenetic changes in individual build L6 



Relation of juvenile to adult build 19 



Part II. Mass studies in heredity of adult build 22 



Methods and materials 



The adult index of build 



Classification of build 



Significance of variations in build 28 



Diseases in relation to build 



Mass study of variation and heredity in build 



Regression of progeny toward mediocrity 



Hypothesis 40 



Mate selection in build 11 



The basal tables 1" 



Part III. Family studies in heredity of build 51 



A. Statement of problem 51 



B. Discussion of special matings 51 



Class I. Both parents slender 51 



Mating 1. One parent is very slender of slender stock; the other slender ."»l 



Mating 2. Both parents are slender, of slender stock 



Mating 3. Other slender x very slender matings 



Mating 4. Other slender X slender matings 



Summary of slender X slender matings I s 



Class II. Both parents fleshy 



Mating 1. One parent is very fleshy, the other fleshy of fleshy stork 



Mating 2. Both parents fleshy of fleshy stock 77 



Mating 3. Other very fleshy X very fleshy matings BO 



Summary 



Class III. Mating of slender with fleshy stock. The Fi generation 86 



Mating 1. One parent slender, of Blender stock, the other fleshy of 

 fleshy stock M ' 



Mating 2. Other slender X fleshy mating- 



Mating 3. Very slender X very fleshy 



Mating 4. Slender x ver\ lleshy matings 



Summary 105 



Class IV. Matings of probably heterozygous parents. The Fi genera- 

 tion 107 



Mating 1. Both parents either n edium or Beshj . and pn bablj cart] 



gametes for .slenderness as well as fleshiness '"' 



Mating 2. other medium \ medium matings 



Summary and discussion 



