JUNE-JULY, 1913 



VOL. XXVII, Nos. 3 and 4 



THE 



OTTAWA 

 N ATURA LIST 



Published by The Ottawa Field-Naturalists' Club. 



JEoftor-. 

 ARTHUR GIBSON, 



Cbhtral Experimental Farm. 

 OTTAWA. 



Hssodate JEOitors: 



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



Anthropology. Entomology. Ornithology. 



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



Botany. Geology. Palaeontology. 



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



Conchology Meteorology. Zoology^ 



CONTENTS: 



Revision of the Silurian of South-western Ontario., By M. G. Williams 37 



The Shade Trees of Ottawa. ------- 38 



Useful Wild Plants of Canada. By J. W. Eastham, - 40 



Early Winter Bird Notes: 1912-1913. By L. Mel. Terrill. - .43 



Meetings of Botanical Branch. ------ 46 



Poisonous Plants of Canada. - - - - - - - 46 



Excursions -- - - - - - - - 56 



Bird Notes 56 



The Rolla L. Crain Co., Limited /X V ^ C 



ISSUED JULY 12. 1513. AS> /&*>* ^\5*lf\ 



Ottawa Post Office as second class ratter f& *&-4H6& ^\ 



Entered at Ottawa Post Office as second class ratter *fc-r ^\ ( 



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