vi Contents 



PAGE 



6. A Quantitative Analysis of Plant Growth. Part II. By G. E. 



Briggs, M.A. (Cantab.), Franklin Kidd, M.A. (Cantab.). 

 D.Sc. (Lond.), and Cyril West, A.R.C.Sc, D.Sc. (Lond.). 

 (With 6 Text-figures) 202 



7. Double Cross-Grain. By J. F. Martley. (With Plate XIII 



and 11 Text-figures) 224 



8. Bionomics of Weevils of the Genus Sitones Injurious to 



Leguminous Crops in Britain. By Dorothy J. Jackson, 

 F.E.S. (With Plates XI V-XIX and 6 Text-figures.) Parti 269 



9. The Structure, Bionomics, and Economic Importance of 



Saperda carcharias Linn., "The Large Poplar Longhorn." 

 By Walter Ritchie, B.Sc, B.Sc (Agr.), Carnegie Research 

 Fellow, University of Edinburgh. (With Plates XX-XXIII 



and 25 Text-figures) 299 



10. Review 344 



No. 4 (February, 1921) 



1. Notes on a Cestode occurring in the Haemocoele of House- 



Flies in Mesopotamia. By J. H. Woodger, B.Sc. (With 



3 Text-figures) 345 



2. On Carrageen. Chondras crispus. By Paul Haas and T. G. 



Hill. (With 5 Text-figures) 352 



3. Frit Fly (Oscinis frit) in Winter Wheat. By F. R. Pether- 



bridge 363 



4. Some Remarks on the Methods formulated in a recent article 



on "The Quantitative Analysis of Plant Growth." By 



R. A. Fisher ..." 367 



5. The Influence of Soil Factors on Disease Resistance. By 



Albert Howard, CLE. (With 5 Text-figures) . . 373 



6. The Plant as an Index of Smoke Pollution. By Arthur G. 



Ruston, B.A., B.Sc. (London). D.Sc. (Leeds). (With 

 Plates XXIV and XXV) ....... 390 



7. Methods in the Quantitative Analysis of Plant Growth — A 



Reply to Criticism. By G. E. Briggs, F. Kidd and C. West 403 



8. A Tomato Canker. Bv Ethel M. Doidge. (With 5 Text- 



figures and Plate XXVI) 407 



Proceedings of the Association of Economic Biologists . . 431 



