CONTENTS 



No. 1 (July, 1918) 



PAGE 



1. Physiological Pre-Deterniiiiation : the Influence of the 



Physiological Condition of the Seed upon the Course of 

 Subsequent Growth and upon the Yield. I. The Effects 

 of Soaking Seeds in Water. By F. Kidd, M.A. (Cantab.), 

 D.Sc. (Lend.), and C. West, D.Sc. (Lond.), F.L.S. (With 

 Plates I and II) 1 



2. "Reversion" and Resistance to "Big Bud" in Black Cur- 



rants. By A. H. Lees, M.A. (With Plates III— VI) . 11 



3. A "Wither Tip" of Plum Trees. By H. Wormald, M.Sc. 



(Lond.), A.R.C.Sc. (With Plates VII— IX) ... 28 



4. Oviposition in the Celery Fly. By T. H. Taylor. (With 



Fig. in Text) 60 



5. An Epitome of Bacterial Diseases of Plants in Great Britain 



and Ireland. By S. G. Paine 62 



6. "Internal Rust Spot" Disease of the Potato Tuber. {Pre- 



liminary communication.) By S. G. Paine ... 77 



No. 2 (October, 1918) 



1. A Short Summary of our Knowledge of the Frit-fly. By 



J. E. Collin, F.E.S 81 



2. On the Transport of Herring Spawn to the Southern Hemi- 



sphere. By H. Chas. Williamson, M.A., D.Sc. . . 97 



3. The Larval and Pupal Stages of Scatopse Notata, L. By 



H. M. Morris, M.Sc. (Mane). (With Plate X and 7 Text- 

 figures) .......... 102 



4. Physiological Pre-Deterraination : the Influence of the 



Physiological Condition of the Seed upon the Course of 

 Subsequent Growth and upon the Yield : II. Review of 

 Literature. Chapter I. By F. Kidd, M.A. (Cantab.), 

 D.Sc. (Lond.), and C. West, A.R.C.Sc, D.Sc. (Lond.). 

 (With 2 Text-figures) 112 



5. A List of Coccidae affecting various Genera of Plants. By 



E. E. Green, F.E.S.,F.Z.S. (Continued from Vol. iv, p. 239) 143 



I S ^ 





