1921

  1. Root development in barley and wheat under different conditions of growth
  2. The development of the flower and grain of barley
  3. Studies on soil reaction. I. A resume
  4. Studies on soil reaction. II. The colorimetric determination of the hydrogen ion concentration in soils and aqueous soil extracts
  5. Studies in crop variation. 1. An examination of the yield of dressed grain from Broadbalk