Table of Contents xiii 



improvement a serious business, 298 the results of 

 plant-breeding effort, 299 state plant-breeding associ- 

 ations, 300 other plant-breeding associations, 304 

 commercial breeding agencies, 308 work of the council 

 of grain exchanges, 310 United States Department of 

 Agriculture and state experiment stations, 310 work 

 of the state agricultural experiment stations, 314 in- 

 struction in plant-breeding in the United States, 321 

 Luther Burbank, 321. 



APPENDIX A 

 GLOSSARY OF TECHNICAL PLANT-BREEDING TERMS , . 325-327 



APPENDIX B 

 PLANT-BREEDING BOOKS 328-331 



APPENDIX C 

 LIST OF PERIODICALS CONTAINING BREEDING LITERATURE 332-334 



APPENDIX D 

 BIBLIOGRAPHY 335-393 



APPENDIX E 

 LABORATORY EXERCISES ....... 394-467 



Exercise 1 Field study of variations by making an 

 herbarium of variations 394-399 



Exercise 2 The statistical study of type and 

 variability 399-412 



Exercise 3 Correlation 412-420 



Exercise 4 Statistical study of apples from different 

 trees 420 



Exercise 5 Statistical study of branches of different 

 trees . 420-423 



