The Association of Economic Biologists 



President 



Professor NEWSTEAD, F.R.S. 



Vice-Presidents 



Professor CARPENTER, M.R.I.A. 



Professor HICKSON, 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 OF Vol. I, Nos. 3 & 4 



FAOB 



1. Some Difficulties in the Improvement of Indian Sugarcanes. By 



C. A. Barber. (Plates XIII— XVI and 3 Text-figures) . . 211 



2. The Pea Thrips {Kahothrips rdbustus). By C. B. Williams. (With 



12 Text-figures) 222 



3. The Apple Sucker, with Notes on the Pear Sucker. By P. R. Awati. 



(Plates XVII and XVIII and 21 Text-figures) .... 247 



4. Insecticides from a Chemical Standpoint. By W. F. Cooper and 



W. H. Nuttall 273 



5. Insecticides. By H. M. Lefroy. (With 1 Text-figure) ... 280 



6. The Composition of the Coffee Berry and its Relation to the Manuring 



of a Coffee Estate. By Rudolph D. Anstead .... 299 



7. The Life-History and Habits of the Greenhouse White Fly {Aleyrodea 



vaporari(yrum Westd.). By E. Hargreaves. (With 56 Text- 

 figures) ............ 303 



8. Infection and Immimity Studies on the Apple and Pear Scab Fungi 



{Venturia inaequalis and F. pirina). By S. P. Wiltshire. 

 (Plates XIX— XXII) 335 



9. Winter Cover Washes. By A. H. Lees 351 



10. A Preliminary Investigation as to the Cause of Rotting of Oranges 



from Brazil. By W. Rushton. (With 1 Text-figure) . . 365 



11. Effects produced by Sucking Insects and Red Spider upon Potato 



Foliage. By A. S. Horne and H. M. Lefroy. (Plates XXIII— 

 XXVII) 370 



12. Notes. (With 1 Text-figure) 387 



13. Review 403 



