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Major Lachlan on the Rise and Fall of the Lakes. 61 
rived and derivable from the climatic influence of our mighty in- 
land waters.* 
In the introduction to my former paper, I was led to remark 
that it is now seventeen years since my attention was first attracted 
to these interesting philosophical subjects, by remarking the great 
difference in the newspaper reports of the temperature, direction 
of the winds, and state of the weather in different parts of the 
Province at the same time, as compared with each other, and by 
having been in the habit for seven years, at my residence on the 
banks of Lake Erie, of noticing the constant extraordinary fluctu- 
ations in the level of that noble Lake; at times consistiug only o 
slight irregularly recurring oscillations ; at others, showing a 
sudden change of level, apparently caused by the temporary im- 
pulse of passing storms; at others, evincing a longer coutinued 
State of elevation or depression, in evident accordance with the 
more enduring influence of winds blowing from the same quarter 
for days together ; and at others, and more especially and unac- 
countably, of a longer maintained rise of several feet above the 
usual level, sometimes lasting for a whole season, or even more, 
as was the case during the memorable years, 1838-39—regarded 
at the time by some of my neighbors as the traditional seven 
years’ flood. 
Being much struck with these singular phenomena, and yet 
not being sufficiently at leisure, besides feeling myself other- 
Wise disqualified for attempting a scientific investigation of their 
mie, I naturally felt, nevertheless, a strong desire to ascertain 
What h 
As a remarkable instance of the tempering influence of the proximity of the 
tioned, that in the i ia ene 
Lakes, it may here be men in the immediate vicinity of Cleveland, the 
te ture during ten years has in no instane ro, while at Co- 
Jur t d Cincinnati, from 120 to 150 miles farther south, it has fre- 
quently to and 10 deg. below it; and that orthern Ohio, generally, 
