I 



AUGUST-SEPTEMBER. 1914 



VOL. XXVIII Nos. 6 and 6 



THE 



OTTAWA 

 NATURALIST 



Published by The Ottawa Field-Naturalists' Club. 



36Dltor: 



ARTHUR GIBSON, 



Entomological Branch, Department of Agriculture 



OTTAWA. 



Bddoctate Bditors: 



Harlan I. Smith, W. H. Harrington, P. A. Taverner, 



Anthropology. Entomology. Orinthology. 



M. O. Malte, Ph. D. H. M. Ami, D.vSc L. M. Lambe, F.G.S., 



Botany. Geology. P alcBontology. 



Prof. John Macoun, M.A. Otto Klotz, LLD. C. Gordon Hewitt, D.Sc. 



Conchology. Meteorology. Zoology. 



CONTENTS: 



Abscission. By Francis E. Lloyd -- - -- -61 



Gall Midges as Forest Insects. By E. P. Felt - - - - 76 



Excursions -----79 



The Rolla L. Grain Co., Limited 



ISSUED August 31, 1914 

 Entered at Ottmva Post Office as second class matter 





