1. A comparative study of the transmission of Hyoscyamus virus 3, potato virus Y and cucumber virus 1 by the vectors Myzus persicae (Sulz), M. circumflexus (Buckton), and Macrosiphum gei (Koch)
  2. Some gall midge species and their host plant range
  3. An analysis of four years captures of insects in a light trap Part I General survey; sex proportion; phenology; and time of flight
  4. Records of butterfly migration in Africa (lepidoptera)
  5. Some butterfly migrations in Europe, Asia and Australia
  6. Eyespot lodging of wheat caused by Cercosporella herpotrichoides Fron
  7. Some recent work on plant viruses
  8. Plant viruses I Serological, chemical and physio-chemical properties
  9. The use of the analysis of variance in enumeration by sampling
  10. Long-term agricultural experiments
  11. The purification of insect-transmitted plant viruses
  12. The intracellular inclusions of some plant virus diseases
  13. Tests of significance of the differences between regression coefficients derived from two sets of correlated variates
  14. The recovery of inter‐block information in variety trials arranged in three‐dimensional lattices
  15. Factors influencing the percentage of nitrogen in the barley grain of Hoosfield
  16. The comparative advantages of systematic and randomized arrangements in the design of agricultural and biological experiments
  17. An apparent inconsistency arising from tests of significance based on fiducial distributions of unknown parameters
  18. The analysis of Latin squares when two or more rows, columns, or treatments are missing
  19. The adjustment of the weights of compound index numbers based on inaccurate data
  20. Biological methods of testing insecticides : a review
  21. Bed-bugs and cockroaches