4 CONTENTS. 



APPENDIX. pAcu 



Pedigree charts and descriptive legends of the 89 families studied 125 



LIST OF TABLES. 



Table A. — Zygotic formulae of descendants of a mixture of excited and depressed 



strains 76 



B. — Most probable distributions of temperaments in the offspring corre- 

 sponding to each combination of temperamental zygotic make-up of the 

 parents 79 



C— Distribution of progeny of the various matings compared with hypo- 

 thetical expectation 82 



D. — Comparison of Sums from table C 89 



E. — A comparison of the actual frequency of various matings with expected fre- 

 quency on the assumption of mating at random 107 



