THE 



MARCH, 1913 



VOL. XXVI, No. 12 



OTTAWA 

 NATURALIST 



Published by The Ottawa Field-Naturalists' Club. 



EOftOt: 



ARTHUR GIBSON, 



Central Experimental Farm, 

 OTTAWA. 



fteeociate Editors ; 



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



Anthropology. Entomology. Ornithology. 



W. T. Macoun, H. M. Ami, D.Sc. L. M. Lambe, F.G.S., 



Botany. Geology. Palaontology. 



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



Conchology. Meteorology. Zoology. 



CONTENTS: 



Some Conditions of Progress in the Plant World. By W. T. Mac- 

 Clement. I 53 



Additions to the Flora of Vancouver Island. By J. M. Macoun. - 160 



Index to The Ottawa Naturalist, Vol. XXVI, 1912-13. - - - 169 



The Rolla L. Crain Co., Limited 



ISSUED MARCH 14, 1913. 



EnUrtd at Ottawa Post Office as second dots natter 



