The Association of Economic Biologists 



President 



Professor NEWSTEAD, F.R.S. 



Vice-Presidents 



Professor CARPENTER, M.R.I. A. 



Professor HTCKSON. F.R.S. 



R. STEWART MacDOUGALL, D.Sc. 



Sir PATRICK MANSON, K.C.M.G., F.R.S. 



A. E. SHIPLEY, D.Sc, F.R.S. 



Council 



R. S. BAGNALL Prof. P. GROOM, D.Sc. 



S. E. CHANDLER, D.Sc. A. D. IMMS, D.Sc. 



F. J. CHITTENDEN Prof. J. H. PRIESTLEY 



E. E. GREEN A. G. L. ROGERS 



Hon. Treasurer 



J. C. F. FRYER, Esq., 



Craven House, 



Northumberland Avenue 



Hon. Secretary 



Professor H. M. LEFROY, 



Acton Lodge, 



Brentford 



CONTENTS 



PAGE 



1. Editorial 1 



2. Impending Developments in Agricultural Zoology. 



By Prof. F. W. Gamble 5 



3. The Action of Bordeaux Mixture on Plants. By 



Prof. B. T. P. Barker and C. T. Gimingham. 

 (With G Text-figures) 9 



4. Notes on the Green Spriice Aphis {Aphis abietina 



Walker). By F. V. Theobald. (With 10 Text- 

 figures) 22 



5. Pollination in Orchards. By F. J. CHITTENDEN . 37 



6. Life-History of Pegomyia hyoscyaini. By A. E. 



Cameron. (Plates I and II and 4 Text-figures) 43 



7. Caterpillars attacking Oaks in Richmond Park. By 



R. H. Deakin. (Plates III-VIII) ... 77 



8. A Bacterial Disease of Fruit Blossom. By B. T. P. 



Barker and Otto Grove .... 85 



9. On the Preparation of Coccidae for Microscopical 



Study. By E. E. Green 98 



