NOTES ON MANITOBA. 157 
In a paper like the present, however, it would be out of place to 
discuss the climate of the eastern hemisphere ; but it could be shown 
that precisely similar causes to those which I have specified can be 
traced as existing there, and as being productive of the same results. 
HUMIDITY. 
The rainfall of the North-West offers as favorable a contrast to 
that of other districts as the temperature has shown. Rains come ~ 
just when they are wanted and cease when vegetation not only no 
longer requires them, but when their continuance would be injurious 
and detrimental to harvesting. Formerly the rainfall of a country 
was judged by the average for the whole year. Such a comparison, 
however, is misleading. What we want to know is the quantity 
that may be expected to fall : 
(a) During the period of vegetation and its distribution month by 
month. /5) During the harvest months. 
The period of vegetation in the North-West embraces May, June, 
July and August. The harvest months are September and 
October. To show how favorably these two conditions are determined 
for the North-West I append the following tabularly arranged 
statements of rainfall : 
TABLE I.—FOR THE FOUR MONTHS OF VEGETATION. 
PosItTIon. I NCHES. 
Ae ee (a) RAINFALL IN INC TORAEL EOE 
Lat. Alt. May. | June. | July. | Aug. 4 MonrTus. 
Winnipeg, N. W. T.| 49°53 | 7:40 | 2°17 | 3°42 | 2°68 | 7-11 15°37 
Toronto, Ontario....| 43°39 | 3°50! 2:98 | 3:04 | 3°72 | 2°81 12°55 
Fort Riley, Kansas..| 9°03 | 13°00 | 4:14 | 3:08 | 1:08 | 2:99 11-29 
Rochester, New York| 43°07 | 5:06) 3:°04.| 3:25 | 3:01 | 2°60 11°90 
TABLE II.—FOR THE TWO MONTHS OF HARVEST. 
PLACE. POSITION. RAINFALL IN INCHES. ToraL FOR 
Lat. Alt. Sept. Oct. 2 MonTus. 
Winnipeg, N. W. T. 49°53 70°40 0°73 0°03 0°76 
Toronto, Ontario.... 43°39 3°50 4°45 2°96 7°41 
Fort Riley, Kansas . 39°03 13°00 4:18 0:02 4:20 
Rochester, New York 43°07 5°09 3°05 3:39 | 6°41 
