iv Contents 



Part 3 (September, 1919) 



PAGE 



Brooks. F. T. and B.uley, M. A. Silver-leaf disease, III. (lu- 



cluding observations upon the injection of trees with antiseptics) 189 



PRE.SCOTT, J.iMES Arthttr. Nitrification in Egyptian SoiJ.s . . 216 



Glynne, Mary D. and Jackson, Violet C4. The distribution of dry 

 matter and nitrogen in the potato tuber. Variety, King 

 Edward. (Thirteen figures ui text) ..... 237 



Robinson, Gilbert Wooding and Hill. Charles Frederick. 

 Further studies on the soils of Xorth Wales. (Two figures in 

 text) 259 



Ei'RE, J. Vargas, Salmon, E. S. and Wormald, L. K. The fungi- 

 cidal properties of certain spray-fluids. II. . . . . 283 



Part 4 (October, 1919) 



Russell, E. J. and Richards, E. H. The amount and composition 

 of ram falling at Rothamsted. (Based on analyses made by the 

 late Norman H. J. Miller.) (Four figures in text) . . 309 



Purvis, 0. N. The effect of j)otassium salts on the anatomy- of 



Daciijlis glomerata. (Twenty-three figures m text) . . . 338 



Griffith, J. J. Influence of mines upon land and livestock in 



Cardiganshii-e. (Plates IV— XVI) 366 



Keen, Bernard A. A note on the caijOlary rise of water in soils . 396 



Keen, Bernard A. A quantitative relation between soil and the 

 soil solution brought out by freezing-point determinations. 

 (Four figures in text) 400 



Annett, H. E. and Sen, Jatindra Nath. The u.se of poppy seed 

 cake as a cattle food and its effect on yield of mUk and com- 

 position of the butter fat. (With seven charts) . . . 416 



Cutler, D. Ward. Observations on soil protozoa. (One figure in 



text) 430 



