s 



1820 



o o 

 o o 



o o 



i 



1 



t\l 



^l 



•i: 



:=: 



rs; 





1820 



I82S 



1830 



1835 



1840 



1845 



I8S0 



lUSS 



I8S0 



I86S 



1870 



1875 



I88Q 



1889 



1890 



I83S 



1900 



1905 

 .1909 



PERIODIC FLUCTUATIONS OF RABBIT, LYNX. AND WOLVERENE 



IN CANADA 



