PROCEEDINGS OF THE ASSOCIATION OF 

 ECONOMIC BIOLOGISTS 



September 24th, 1920. 



PAPERS. 



I. The Relation of Climatic Factors to Disease in Plants. E. S. Salmon. 



II. Immunity to Disease in Plants as a Mendelian Factor. F. T. Brooks. 



III. The Relation of Soil Aeration and Soil Temperature to Disease in Plants. 

 A. Howard. 



November 5/ h, 1920. 



PAPERS. 



I. The Reclamation of Waste Land by Botanical Means. F. W. Oliver. 



II. The Reclamation of Waste Land by Agricultural Means. E. J. Russell. 



December 10th, 1920. 



EXHIBITS. 



I. Cultures of Soil- Algae from the Rothamsted Plots. B. Muriel Bristol. 



II. (a) A New Method of Plagella Staining. 



(f>) A New Incandeseant Lamp for Microscopic Use. S. G. Paine. 



III. Phot/wpsi* ipithya Lind., on Douglas Fir. N. L. Alcock. 



IV. Photograph of E. F. Smith of Washington. Wm B. Brierley. 



PAPERS. 



I. Problems of Economic Biology in British East Africa. W. J. Dowson. 



II. Nitrogen Fixation in the Ericaceae. M. C. Rayner. 



January 28th, 1921. 

 EXHIBIT. 

 I. Achatinaftdica. E. E. Green. 



PAPERS. 



I. Greenhouse Whitefly and its Control. R. L. Lloyd. 



II. Personal Impressions of some American Biologists and their Problems. 



Wm B. Brierley. 



