510 PROCEEDINGS OF THE CANADIAN INSTITUTE. 
June Hamilton averages 66°.0 and Windsor 67°.85. The earlier 
springs of Windsor are due in part to latitude, in part to greater 
nearness to the rapidly advancing heat of the south-west, and in part 
to the fact that easterly winds which prevail in spring reach Hamilton 
from the deep, winter-chilled lake, and Windsor from the warmer 
land of Essex and Kent. 
\ 
The following table shows the mean temperature of each month, 
the average monthly maxima and average monthly minima at 
Windsor, for the eight year period (1874-81.) 
Jan. | Fes. | Mar. | Apr. | May. | Junz.| Juty.| Aoc. | Sept. | Oct. | Nov. DEc. 
Mean ....| 24°1| 24°7| 32°4] 45°3] 60°8) 67°8| 73:4, 71°4| 63°38) 516] 37-1) 284 
Meanmax.| 50°0| 53°5| 61°8| 77:3] 889} 91°7| 95:1] 93°5| 90%] 81-2] 645] 533 
Mean min. | —3°0 | —0°6 9-4) 188} 30°0| 47°3] 51:4] 483] 36°8| 25°0| 10-4 0-0 
The mean of the year is 48°.49 ; the mean maximum 96°.25, (very 
nearly the same as at Hamilton) and the mean minimum,—10°.75 or 
3°.4 lower than at Hamilton, and almost the same as at Toronto 24 
degrees farther north. The absolutely highest temperature in the 
eight years referred to was 100°.6 (Sep., 1831) : the absolutely lowest 
—19».5. 
In the four coldest months the maxima were as follows :—Dec. 
68°.3; Jan., 669.9 ; Feb. 63°.4; March, 77°.4. The contrast with 
Toronto goes to show the effect of Lake Ontario in protecting 
against unseasonable temperatures. There the absolute maxima for 
those months were Dec., 61°.1; Jan., 57°.5; Feb., 51°.6; March, 
58°4. Absence of lake-water to the west renders the precipitation 
small compared with the adjoining Huron district. The snowfall is 
light, and the general temperature of winter, and particularly the 
warm extremes, reduces the average period of sleighing to a few 
days. The fruits and flora generally are the same as in the Niagara 
district. The vineyards are very productive, averaging in good soils 
five tons of grapes, and nearly 700 gallons of wine (first drawing) 
to the acre—a yield probably unsurpassed either in California or in 
Europe. 
The southernmost part of Ontario and of Canada, Pelee Island, a 
cownship of 17 square miles (lat. 41° 40’ to 41° 50’—further south 
than Rome), has a climate peculiarly interesting. The island lies 
