1. The deternmination of rotenone in derris root. A reply
  2. Note on the occurrence of Ophiobolus graminis Sacc. var. avenae EM Turner in Scotland in 1942
  3. Value of phloem necrosis in the diagnosis of potato leaf‐roll
  4. Value of phloem necrosis in the diagnosis of potato leaf‐roll
  5. Behaviour of the fungus Rhizoctonia solani Kiihn in the soil
  6. Bulb Correction in Capillary Tube Viscometry
  7. The Relation Between the Number of Species and the Number of Individuals in a Random Sample of an Animal Population
  8. Studies of fluctuations in insect populations X Prolonged larval life and delayed subsequent emergence of the adult gall midge
  9. Studies of wild populations
  10. Birds and butterflies
  11. Area and number of species
  12. A method of collecting and storing without pressure insects and galls attached to leaves
  13. A safe method of measuring the wings of set butterflies
  14. The numbers of publications written by biologists
  15. The West Africa Commission, 1938-1939 Technical Reports
  16. Composts, their preparation and value
  17. The maintenance of soil fertility
  18. Sharp eyespot of wheat caused by Corticium (Rhizoctonia) Solani
  19. Minor elements and plant growth
  20. The inactivation of tomato bushy stunt virus by heating and freezing
  21. Methods for the purification of tomato bushy stunt and tobacco mosaic viruses
  22. Methods and purposes of agricultural surveys
  23. Daily and seasonal changes in the surface temperature of fallow soil at Rothamsted
  24. Experiments on the poisoning of honeybees by insecticidal and fungicidal sprays used in orchards
  25. The behaviour of a population of honeybees on an artificial and on a natural crop
  26. The relation between the number of species and the number of individuals in a random sample of an animal population
  27. The fractional replication of factorial arrangements
  28. Biological methods of determining the insecticidal values of pyrethrum preparation (particularly of extracts in heavy oil)