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  1. The growth of nodule bacteria in the expressed juices from legume roots bearing effective and ineffective nodules
  2. Evidence against the hypothesis that certain plant viruses are transmitted mechanically by aphides
  3. Studies on the transmission of sugar-beet yellows virus by the aphis, Myzus persicae (Sulz.)
  4. Gall midges and grass seed production
  5. Studies of fluctuations in insect populations VII The Button Top Midge (Rhabdophaga heterobia) at Syston, 1934-39
  6. Meta slug control: experiments on possible substitutes for bran
  7. The gall midges attacking the seed-heads of Cocksfoot, Dactylis glomerata, L
  8. Two new pests of apple and black currant
  9. The ecology of activated sludge in relation to its properties and the isolation of a specific soluble substance from the purified effluent
  10. The biology of the Chrysanthemum midge in England
  11. 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
  12. The numbers of insects caught in a light trap at Rothamsted during four years 1933–1937
  13. A note on the statistical analysis of sentence-length as a criterion of literary style
  14. Manuring Hevea III Results on young buddings in British Malaya
  15. The growth and anatomical structure of the carrot (Davcus carota) as affected by boron deficiency
  16. The estimation of the yields of cereal experiments by sampling for the ratio of grain to total produce
  17. The inactivation of some plant viruses by urea
  18. The effects of alkali and some simple organic substances on three plant viruses
  19. The recovery of inter‐block information in balanced incomplete block designs
  20. Modern experimental design and its function in plant selection
  21. Lattice squares
  22. Meteorological and soil factors affecting evaporation from fallow soil
  23. Gas and vapour movements in the soil: II. The diffusion of carbon dioxide through porous solids
  24. Gas and vapour movements in the soil: I. The diffusion of vapours through porous solids
  25. The choice of drinking water by the honeybee
  26. The maintenance of high atmospheric humidities for entomological work with glycerol-water mixtures