\ Devoted to Elementary Science 



OFFICIAL ORGAN OF TH I 



LEGISLATIVE LiBRARr 

 !AN 171922 

 American Nature-Stu4y'AS.oiG!i®ty&uiLDiNGs 



TORONTO 



Photo byW.A. Rowley 

 A SILENT SENTINEL OP THE DUNES 



NOVEMBER, 1921 



Vol. 17 No. 8 



Whole No. 148 



20c a copy $1.50 a year 



