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traders in passing [from] between the Mississippi and Lake Superior. The Bois Brule is about ninety four miles long and navigable for canoes eighty miles. It has its source in a spring of very clear, cold water, twenty yards across, situated near the Upper St. Croix Lake. It is said to abound in brook trout. "From the Little Falls twenty two miles below its source (says Lieut. Allen) this river winds through a deep ravine between high pine toped hills, the sides of which, next the river are thickly grown over with cedar, pines, tamarack, and brushwood. Near the mouth of the river the hills rise very steeply and the growth is mostly cedars. In some places the forest has slid off exposing a bare bank of red clay of considerable height. Where rock occurs in place on this river it is sandstone.

Bonner's Creek, a small stream in Iowa county rising at Belmont, and running in an easterly direction through the north part of town three, enters the Pekatonica opposite Willow Spring.