Phenological Observations in Canada. 81 



INVERNESS. RICHMOND. VICTORIA. 



145.07 146.65 147.97 



Mayflower 111.0 122.4 105.2 121.7 108.2 121.6 



Blue Violet 126.9 139.4 132.9 142.0 ISl'l 138.3 



Red Maple 141.7 149.0 137.0 143.2 146.0 150.4 



Dandelion 125.8 139.9 134.7 142.4 134.2 142.5 



Strawberry 129.4 142.0 135.5 145.9 134.4 145.3 



WUd Red Cherry.... 146.0 154.2 149.2 156.9 152.7 159.1 



Buttercup 154.9 164.1 1.52.9 162.9 152.6 162.3 



Indian Pear 136.0 151.3 146.0 154.4 148.6 157.3 



Apple 153.6 162.2 16L.4 167.6 159.5 164.2 



Lilac 171.3 180.3 166.4 174.9 172.5 178.7 



139.66 150.48 142.12 151.19 143.98 151 97 



An interesting irregularity in the phenochrons of the 

 different counties is shown in nearly every part of this 

 table. Their order is not parallel in the different coun- 

 ties. Very often it is reversed. As the phenochrons are 

 averages of ten observations, it cannot be laid altogether 

 to the charge of defective observation. The rarity of cer- 

 tain species in certain counties, or in the districts in which 

 the observations were made, tends to make the phenochron 

 later, for the plants may be in flower several days before 

 they may be met with. But the character of the soil, the 

 elevation, the slope, etc., must have had some influence. 

 And, then, may it not be possible that the same species 

 may develop a tendency to an earlier or later maturing 

 in different regions ? These are questions which careful 

 future observations may help to answer. 



To illustrate the eft'ect of asymmetry of stations on the 

 phenochrons of a large district or country, I select five of 

 the best-observed plants, giving first their phenochrons 

 for a period of seven years, 1892 to 1898, based on the 

 few and irregularly distributed stations of the Botanical 

 Club of Canada ; giving secondly their phenochrons for 

 . the year 1898, based on the observations made at the 

 eight stations, Berwick, Windsor, Halifax, Musquodoboit, 

 Wallace, Pictou, IN ew Glasgow and Port Hawkesbury ; 

 and giving thirdly their phenochrons derived from 180 

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