1. Symbiotic effectiveness in nodulated red clover. II. A major gene for ineffectiveness in the host
  2. Symbiotic effectiveness in nodulated red clover. I. Variation in host and in bacteria
  3. Dawn and dusk flight of Drosophila subobscura Collin
  4. The hydrolysis of aluminium salt solutions
  5. The fission of tobacco mosaic virus and some other nucleoproteins by strontium nitrate
  6. Factors controlling biological multiplication
  7. Studies on composts prepared from waste materials II the fractionation of organic nitrogen
  8. Studies on composts prepared from waste materials I preparation, nitrogen losses and changes in ‘soluble nitrogen’
  9. Memorandum on the gall midges living on the sorghums, the Panicum millets and rice
  10. The Black Medick or “Trefoil” gall midge
  11. Gall-midge larvae as endoparasites, including the description of a species parasitising aphids in Trinidad, B.W.I
  12. The gall midges living in the white clover flowers
  13. A method for estimating populations and counting large numbers of Aphis fabae Scop
  14. Random and non-random distributions of Coccinellidae
  15. Society of chemical industry : Presidential address
  16. Notes on some migrations of butterflies in West Africa
  17. Phenology - the study of the seasons
  18. A migration of Lepidoptera and Diptera in Nepal
  19. Notes on a small collection of Sphingidae from Nigeria
  20. The statistical outlook in relation to ecology
  21. Manuring Hevea V Some long-term effects in the Dunlop (Malaya) experiments
  22. Nutrition problems in forest nurseries summary report for 1952
  23. The production and use of fertilizers-some current trends and problems-jubilee memorial lecture
  24. The control of nosema disease
  25. The respiratory currents in the tracheal system of the adult honey-bee
  26. The filtration of particles by the proventriculi of various aculeate Hymenoptera
  27. The influence of iron supply on toxic effects of manganese, molybdenum and vanadium on soybean, peas and flax
  28. Obituary notices : [Tom Goodey] and Winifred Brenchley
  29. Soil-borne diseases of cereals
  30. Some effects of thiouracil on virus-infected plants
  31. The distribution of viruses in different leaf tissues and its influence on virus transmission by aphids
  32. The analysis of experiments containing different crop rotations
  33. Micrometeorology in the potato crop
  34. Evaporation over parts of Europe
  35. The method and importance of the recognition by a colony of honeybees (A. mellifera) of the presence of its queen
  36. A sensitive recording dew-balance
  37. Night cooling under clear skies
  38. Error and accuracy in thermocouple psychrometry
  39. The Importance of ‘Queen Substance’ in the Life of a Honeybee Colony
  40. Allethrin
  41. Wind direction and the infestation of bean fields by aphis fabae scop
  42. Aphid migration in relation to weather