THE ANNALS OF 

 APPLIED BIOLOGY 



THE OFFICIAL ORGAN OF THE ASSOCIATION 

 OF ECONOMIC BIOLOGISTS 



EDITED BY 



E. E. GREEN, Way's End, Camberley (late Government Entomologist, Ceylon) 



AND 



Professor B. T. P. BARKER, National Fruit and Cider Institute, Bristol 

 Dr S. E. chandler, Imperial Institute, London 

 F. J. CHITTENDEN, Royal Horticultural Society's Gardens, Wisley 

 J. C. F. FRYER, Board of Agriculture and Fisheries, London 

 Professor F. W. GAMBLE, The University, Birmingham 

 Professor PERCY GROOM, Imperial College of Science and Technology, London 

 Dr a. D. IMMS, The University, Manchester 

 Professor R. NEWSTEAD, The University, Liverpool 

 Professor J. H. PRIESTLEY, The University, Leeds 



Volume IV 1917-18 



CAMBRIDGE 



AT THE UNIVERSITY PRESS 



1918 



