1. The infected root‐hair count for estimating the activity of Plasmodiophora brassicae Woron. in the soil
  2. The microbiological assay of vitamins: the estimate and its precision.
  3. A quantitative study of the interaction of bacteriophage with Rhizobium using the technique of poured plates
  4. The production of plaques by Rhizobium bacteriophage in poured plated and its value as a counting method
  5. The Reaction of Products of Initial Stages of Peptic Proteolysis of Human and Horse Serum Albumin with Antisera to the Original Albumins
  6. Specific precipitation of one protein by antiserum to another
  7. Conversion of non-precipitating and inhibiting protein complexes into forms again precipitable by the antisera to the original proteins
  8. Studies in the Physiology of Leaf Growth: I. The Effect of Various Accessory Growth Factors on the Growth of the first Leaf of isolated Stem Tips of Rye
  9. Sewage sludge and the market gardener
  10. Dry farming in India [Book Review]
  11. Photographic plates for use in the RCA electron microscope
  12. Plant-Growth Substances as Selective Weed-Killers: Inhibition of Plant Growth by 2:4-Dichlorophenoxyacetic Acid and other Plant-Growth Substances
  13. A factor in clover nodule formation associated with the volume of the medium occupied by the roots
  14. Effective and ineffective strains of legume nodule bacteria
  15. Ripening of the Onion Bulb and Infection by Botrytis Species
  16. Acid-producing mechanisms in minced leaves
  17. Virus yellows of sugar beet
  18. Soils and fertilizers
  19. Slugs in gardens: Their numbers, activities and distribution. Part 2
  20. Two new gall midges from Mauritius
  21. The competition between barley and certain weeds under controlled conditions
  22. Some aspects of the work at Rothamsted
  23. Balanced manuring
  24. Index of diversity as applied to ecological problems
  25. Occurrence of Vanessa Cardui (Lepidoptera) at sea off the West African coast
  26. Notes on the fat content of two british migrant moths (lepidoptera)
  27. Geographical variation in the wing length of Danaus Plexippus (Lep. Rhopalocera)
  28. Fertilizers during the war and after
  29. Agrochemistry
  30. Combine-drilling of phosphate fertilizers for cereals
  31. The effect of eyespot (Cercosporella herpotrichoides Fron.) on wheat and the influence of nitrogen on the disease
  32. The influence of periodic fallowing on the prevalence of viable weed seeds in arable soil
  33. Trace elements in relation to plant growth
  34. Winifred E Brenchley Obituary Notice
  35. The suppression of one plant virus by another
  36. The separation and properties of tobacco mosaic virus in different states of aggregation
  37. Protein precipitation and virus deactivation by extracts of strawberry plants
  38. Plant viruses and virus diseases
  39. Further studies on the purification and properties of a virus causing tobacco necrosis
  40. The influence of various physical and biological factors of the environment on honeybee activity - an examination of the relationship between activity and nectar concentration and abundance
  41. The incidence and distribution of some diseases of the adult honeybee (Apis-mellifera L) in England and Wales