1891

  1. XLVII On nitrification Part IV A report of experiments made in the Rothamsted Laboratory
  2. Water and waer-supply with special reference to the supply of London from the chalk of Hertfordshire
  3. History and present position of the Rothamsted investigations
  4. Observations on rainfall, percolation and evaporation
  5. The sources of the nitrogen of our leguminous crops
  6. Results of experiments at Rothamsted on the question of the fixation of free nitrogen