1. Some Fish-Poison Plants and Their Insecticidal Properties
  2. The determination of the size distribution of soil clods and crumbs
  3. Obituary Mr C H Turnor - 1940
  4. Obituary Professor Jan Wodek and Adam Rozanski - 1940
  5. Studies on the feeding methods and penetration rates of Myzus persicae Sulz., Myzus circumflexus Buckt., and Macrosiphum gei Koch
  6. Clay mineral structures and their physical significance
  7. Note on the freezing of soil
  8. A quantitative study of the interaction of viruses in plants
  9. The Insecticidal Properties of Certain Species of Annona and of an Indian Strain of Mundulea sericea (" Supli").
  10. The problem of the evaluation of rotenone-eontaining plants V The relative toxicities of different species of derris
  11. Aerobic denitrification
  12. Studies on the British White-flies (Homoptera, Aleyrodidae).
  13. Ophiobolus graminis Sacc. var. avenae var. N., as the cause of take all or whiteheads of oats in Wales
  14. Soil conditions and the Fusarium culmorum seedling blight of Wheat.
  15. The active principles of leguminous fish-poison plants. Part IV The isolation of malaccol from Derris malaccensis
  16. The active principles of leguminous fish-poison plants. Part V. Derris malaccensis and Tephrosia toxicaria
  17. Utilization of nitrogen by Ophiobolus graminis
  18. Soil conditions and the take-all disease of wheat V Further experiments on the survival of Ophiobolus graminis in infected wheat stubble buried in the soil
  19. The cultivation of malting barley in England.
  20. The detection of linkage
  21. The Little Hoos field experiment on the residual values of certain manures
  22. The structure of 'ineffective'nodules and its influence on nitrogen fixation
  23. The minerals in the clay fractions of a black cotton soil and a red earth from Hyderabad, Deccan State, India
  24. Weather and crops
  25. Field trials: their lay-out and statistical analysis
  26. The growth of nodule bacteria in the expressed juices from legume roots bearing effective and ineffective nodules
  27. Evidence against the hypothesis that certain plant viruses are transmitted mechanically by aphides
  28. Studies on the transmission of sugar-beet yellows virus by the aphis, Myzus persicae (Sulz.)
  29. Gall midges and grass seed production
  30. Studies of fluctuations in insect populations VII The Button Top Midge (Rhabdophaga heterobia) at Syston, 1934-39
  31. Meta slug control: experiments on possible substitutes for bran
  32. The gall midges attacking the seed-heads of Cocksfoot, Dactylis glomerata, L
  33. Two new pests of apple and black currant
  34. The ecology of activated sludge in relation to its properties and the isolation of a specific soluble substance from the purified effluent
  35. The biology of the Chrysanthemum midge in England
  36. An analysis of four years captures of insects in a light trap. Part II The effect of weather conditions on insect activity; and the estimation and forecasting of changes inthe insect population
  37. The numbers of insects caught in a light trap at Rothamsted during four years 1933–1937
  38. A note on the statistical analysis of sentence-length as a criterion of literary style
  39. Manuring Hevea III Results on young buddings in British Malaya
  40. The growth and anatomical structure of the carrot (Davcus carota) as affected by boron deficiency
  41. The estimation of the yields of cereal experiments by sampling for the ratio of grain to total produce
  42. The inactivation of some plant viruses by urea
  43. The effects of alkali and some simple organic substances on three plant viruses
  44. The recovery of inter‐block information in balanced incomplete block designs
  45. Modern experimental design and its function in plant selection
  46. Lattice squares
  47. Meteorological and soil factors affecting evaporation from fallow soil
  48. Gas and vapour movements in the soil: II. The diffusion of carbon dioxide through porous solids
  49. Gas and vapour movements in the soil: I. The diffusion of vapours through porous solids
  50. The choice of drinking water by the honeybee
  51. The maintenance of high atmospheric humidities for entomological work with glycerol-water mixtures