1. Transmission and spread of late blight in seed potatoes

   • A. H. Eddins

   OriginalPaper Pages: 333 - 339

2. The use of tuber specific gravity in determing the effectiveness of leafhopper insecticides

   • James W. Apple
   • Charles Y. Arnold

   OriginalPaper Pages: 339 - 343

3. Effect of planting depth on yield and tuber set of potatoes

   • O. A. Lorenz

   OriginalPaper Pages: 343 - 349

4. Sectional notes

   • M. A. Lindsay
   • E. R. Jackman
   • C. A. Henderson

   Announcement Pages: 350 - 354

5. The comparative effectiveness of certain cutting knife treatments in the control of ring rot of potatoes

   • W. A. Kreutzer
   • W. J. Henderson
   • George H. Lane

   Erratum Pages: 355 - 355