CONTENTS 
The relation of science to plant breeding—historical review 
The future relation of genetics and plant breeding : 
Planning breeding operations in the light of scientific igmamiesby: 
PART III 
Animal Breeding 
CHAPTER XXVII 
Tue GeneraL Aspects or ANIMAL BREEDING 
Introductory . . : : 
The history of animal breeding : 
The animal breeding industry 
The art of breeding . : 
The problems of animal Brecdine 
The service of genetics 
The service of genetics in education: : 
The personal equipment of the animal eee : 
CHAPTER XXVIII 
VARIATION IN Domestic ANIMALS 
Introductory . 
The sources of cena one 
Selection as a cause of variation 
Variation by modifiability . 
Modifiability and breeding value . 
Modifiability and correlation. 
Variation by recombination . 
Mutation in domestic animals 
CHAPTER XXIX 
MeENDELISM IN Domestic ANIMALS 
Introductory. : 
Importance of eapenmental reales : 
Mendelism in horses 
Mendelism in sheep. 
Mendelism in swine. 
Mendelism in poultry . 
CHAPTER XXX 
ACQUIRED CHARACTERS IN ANIMAL BREEDING 
Introductory . 
The problem : 
The belief in the imberitence of Beatie Cramer: 4 
The argument against the inheritance of acquired aes 
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