NOTES ON MANITOBA. 



157 



In a paper ILke the present, howevei", 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 tbe period of vegetation and its distribution month by 

 month, {b) During the harvest months. 



The ])eriod of vegetation in the ISTorth-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 Korth-West I append the following tabularly arranged 

 statements of rainfall : 



TABLE I.— FOR THE FOUR MONTHS OF VEGETATION. 



TABLE II.— FOR THE TWO MONTHS OF HARVEST. 



