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102

is also inferred from the vegetation of spring for it has been ascertained by direct observation that in the town of Lisbon only fifteen miles from the Lake at Milwaukee the early spring flowers show themselves about ten days earlier than on the Lake. In the spring, vegetation, in places remote from the Lakes shoot up in a very short time and begin to show their petals; whule on the Lake shore the cool air retards them and bring them more gradually into existence.

Another effect of the Lakes is, as perhaps might be expected, to create a greater degree of humidity in the atmosphere, and hence a greater quantity of rain. This is also proved by comparing the observations at the two points above referred to; there being annually about eight and a half inches more at Green Bay than on the Mississippi. It is however remarkable that these Lakes do not afford more fogs than are found to exist about them. At Milwaukee on the shore of