JANUARY, 1908 



VOL. XXI, No. 10 



THE 



OTTAWA 

 NATURALIST 



Published by The Ottawa Field-Naturalists' Club. 



CONTENTS. 



PAGE 



Dates of Departure in the Fall Migration of the More Common 



Birds of Ottawa. By G. Eifrig 185 



Late Birds at Gait 187 



Notes on Experiments Relating to the Origin of Life-Forms. By 



Mark G. McElhinney 188 



List of Birds Seen on Sable Island, N.S. By James Bouteiler - 189 



Some of the Influences Affecting Seed Production - - _ 191 



Botanical Notes -- - - - - - - - 195 



Report of the Zoological Branch, 1907 198 



Meeting of the Entomological Branch 201 



Council Meeting -------.-_ 203 



Review ----_____._ 204 



/ . 



ISSUED FEBRUARY 12, 1908. 



OTTAWA, CANADA; 



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The Rolla L. Crain Co. Limited 'X'X /^ 



Wellington St. '^X "*'**"^^ / *w 



MnUred at the^Ottawa Post Office as seeonti class viatler. ^^ V ^'>^ <I>J^ ^V*^ 



