56 PRACTICAL CORN CULTURE 
‘*A More Profitable Corn Planting Method.’’ Farmers’ Bul- 
letin 400. C. P. Hartley. 
‘Distance Between Hills.’’ Illinois Bulletin 126. Hume, 
Center and Hegnauer. 
‘‘Suecessful Corn Culture.’’ Prof. P. G. Holden. 
‘*Soil Book.’’? Frank I. Mann. 
‘‘How to Grow 100 Bushels of Corn per Acre on Worn 
Land.’?’ Wm. C. Smith. 
‘‘The Fertility of the Land.’’? Isaac Phillips Roberts. 
