TABLE OF CONTESTS xiil 



CHAPTER IX 



PAGES 



Methods op Laying out a Breeding Plat . . . 94-100 

 How to conduct a breeding plat, 95 — The second 

 year's work, 98 — Continuation of breeding, several 

 plans, 99. 



CHAPTER X 



Results with Hybridization ...... 101-116 



Degrees of Relationship, 101 — Xenia, 103 — Mendel's 

 laws, 104 — Dominant and recessive characters, 105 — 

 .Hybridization, effect on growth, 107 — Self-fertilization, 

 107 — Pure strains, or biotypes, 109 — Crossing biotypes, 

 111 — Crossing varieties, 111 — Isolating high-yielding 

 biotypes, 115. 



CHAPTER XI 



Acclimation and Yield 117-121 



Effect of environment on the corn plant, 118 — Effect 

 of previous environment on yield, 119 — Adaptation of 

 the soil, 121. 



CHAPTER XII 



Cropping System in Relation to maintaining the Yield 



OF Corn 122-128 



Cropping systems, 122 — Restoring production, 123 — 

 Maintaining production, 124 — Rotations for corn grow- 

 ing, 127. 



CHAPTER XIII 



Organic Matter 129-134 



Farmyard manure for corn, 130. 



