THE CLIMATE OF TORONTO 
records, and shortly after this, in the spring of 1907, 
the instruments were removed to a somewhat con- 
fined area half a mile distant, where they remained 
for eighteen months, until removed to the present 
Observatory in September, 1909. During two years 
prior to removal from the old site, comparisons were 
made with thermometers placed at the site now occu- 
pied, and very close agreement was found. In addi- 
tion to this long series of observations at the Govern- 
ment Observatory, there was an almost unbroken 
series of observations by the Rev. Charles Dade, 
between 1830 and 1839. 
The Toronto Observatory, in addition to being 
the local meteorological observing. station, is the 
central office of the Dominion Meteorological Service, 
whence are issued all weather forecasts and storm 
warnings and also all Government bulletins and 
reports, concerning the climatology of Canada. 
The mean annual temperature, as determined 
from readings of the maximum and minimum ther- 
mometers during 71 years’ observations, is 44°.4. 
The highest annual mean was 47°.2 in 1898, and the 
lowest was 40°.8 in 1895—a difference of 6°.4. The 
greatest difference between any two successive years 
was 3°.8 in 1882-3, and the least was 0°, in 1841-2. 
The seasonal mean temperatures are: Winter, 
23°.4; Spring, 41°.0; Summer, 65°.8; Autumn, 
4T°5. 
There are some indications that the climate has 
changed slightly with the gradual clearing away of 
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