Vol. IX. Part 4 



October, 1919 



THE 



JOURNAL 



OF 



AGRICULTURAL SCIENCE 



EDITED BY 



Professor R. H. BIFFEN, M.A., F.R.S., Cambridge 



Sir a. D. HALL, K.C.B., M.A., F.R.S., Board of Agriculture, London 



E. J. RUSSELL, O.B.E., D.Sc, F.R.S., Rothamsted Experimental Station, Harpenden 



Professor T. B. WOOD, C.B.E., M.A.,*F.R.S., Cambridge 



IN CONSULTATION WITH 

 Dr H, p. ARMSBY, State College, Pennsylvania, U.S.A. 

 B. C. ASTON, Department of Agriculture, Wellington, New Zealand 



Professor B. T. P. BARKER, M.A., National Fruit and Cider Institute, Long Ashton, Bristol 

 W. BATESON, M.A., F.R.S., John Innes Horticultural Institute, Merton, Surrey 

 J. R. CAMPBELL, B.Sc, Department of Agriculture, Dublin 

 I. B. POLE EVANS, Department of Agriculture, Pretoria, South Africa 

 F. B. GUTHRIE, Department of Agriculture, Sydney, N.S.W. 

 Professor J. HENDRICK, B.Sc, Marischal College, Aberdeen 



Sir T. H. MIDDLETON, K.B.E., C.B., M.A., The Development Commission, London 

 F. T. SHUTT, M.A., F.I.C., Experimental Farms, Ottawa, Canada 

 Professor W. SOMERVILLE, M.A., D.Sc, School of Rural Economy, Oxford 

 Dr a. C. true, Department of Agriculture, Washington, D.C., U.S.A. 

 Dr FRANCIS WATTS, CM.G., Barbados 

 Dr H. J. WHEELER, American Agricultural Chemical Co., Boston, Mass. 



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[Issued 7 November, 19 19.] 



