‘flat country skirts the bay on the south an 
ey 
_ 
2 W. W. Mather on the M etgordingy 
between Eagle Harbor and Eagle River, four or five miles across 
at its capes—puffs and blasts of warm air from the land are com- 
mon, especially in the afternoon and evening. The land rises 
very gradually from the coast for one half to one mile, and then 
rapidly ascends to the height of the mountain eight hundred to 
twelve hundred feet, and this range’ of hills extends for many 
miles with nearly uniform surface and height, rarely broken by 
rae The wind often blows strongly from the land for many 
urs. The same facts have been, observed at Porter’s Island and 
a3 opber Harbor; both open to the north on the lake, and both 
; ‘a ve similar ranges of high land on the south. 
At Bete Gris Bay on the. pours side of Kewena Peninsu- 
la, a range of mou hundred to thirteen hundred feet 
high, bounds the north 2 ot the bay and extends many miles to 
the west, gradually curving see to the Mee and s.w.; anda 
d west, ar tends thirty 
or forty miles to the s.w. be the mot 
coast of the peninsula, with a, breadth of ‘to eight miles. 
Violent blasts of warm air ofa. blow ae the west out of this 
bay in the afternoon. ‘The bay opens to the s 
In Yellow Dog Bay at the mouth of Yellow I Dog River, simi- 
lar facts have been observed. This bay opens to the y.r. While 
it. was calm at the capes of the bay and on | the lake, a strong blast 
of warm air, from the land blew from the s.w. -out of the middle 
of the bay ; and between this axis and the pes, the air blew in 
towards the axis, converging towards a point. outside the bay in 
the lake. Such facts are common in calm weather when the 
sun shines brightly. Similar observations have been made in 
many places, and they are here noti use they seem to be 
in opposition to the generally received notions of. the action of 
the sun and heated air in ahilly and mountainous region. ‘Thesé 
phenomena often extend into. and through the night. The theory 
of the land breeze explains it for the night, but not for the day. 
Notes in. regard to the weather and. barometric waves on Lake 
Superior, 1846. 
The iivwies memoranda from my diary, are introduced with 
a view not only to shew the sai eatin of the weather on 
the lake coast, but also to shew some: of the facts from which the 
inference is drawn that the sudden fluctuations of level of the 
water on the lake coast, generally precede gusts or storms. The 
aurora borealis has long been’considered a precursor of gales. In 
the meteorological sa He annexed, some observations of greater 
exactness are registered bearing on these points 
June 9. On Lake Superior, between White Fish Point and 
a pes calm, oceasionally a light s.w. wind; fog banks 
cexthié ough the pe weeres like sap land. to 
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