1907

  1. On the evolution of gas during churning
  2. Agricultural research
  3. Some observations on the assimilation of atmospheric nitrogen by a free living soil organism Azotobacter Chroococcum of Beijerinck
  4. Some observations on nitrification
  5. The flocculation of turbid liquids by salts
  6. LXIII -The interaction of ammonium salts and the constituents of the soil