CONTENTS 



Nos. 1 and 2 (September, 1917) 



1. Frit Fly (Oscinus Frit) attacking Winter Wheat. By F. R 



Petherbridge 



2. Some Farm Insects observed in the Aberystwyth Area. 



1913-1916. By C. L. Walton, M.Sc 



3. A Note on Agricultural Oecology in Mid- Wales. By C. L 



Walton, M.Sc 



4. On a Disease of the Beech caused by Bulgaria Poli/morpha 



Wett. By R. J. Tabor, B.Sc, and Kate Barratt, M.Sc 

 (With Plate I.) 



5. The Life History and Economy of the Cheese Mites. By 



Nellie B. Eales, B.Sc. (Lond.) 



6. Investigation of Bulb Rot of Narcissus. Parti. The Nature 



of the Disease. By E. J. Welsford, F.L.S. (With 5 Text- 

 figures.) ......... 



7. Notes on a Plague of Psocids in a Factory. By R. A. Harper 



Gray, M.A., B.Sc. (Agric), M.Sc 



8. A Bacterial Blight of Pear Blossoms occurring in South 



Africa. By Ethel M. Doidge, M.A., D.Sc, F.L.S. (With 

 7 Text-figures.) ........ 



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



E. Ernest Green, F.E.S., F.Z.S 



10. Note on the Imnninity of Chalcid Parasites to Hydrocyanic 

 Acid Gas. By E. Ernest Green 



No. 3 (December, 1917) 



1. On the Larval and Puj)al Stages of Bibio Johannis L. By 



Hubert M. Morrls, M.Sc. (Manch.) (With Plate II and 

 12 Text-figures.) 



2. Two Experiments in House Fumigation. By H. Maxwell- 



Lefroy 



3. The Locust in Cyprus. By W. P. Delane Stebbing, F.G.S. 



4. Mussel Beds; their Productivity and Maintenance. By 



Frank S. Wright 



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