RM2CP1YFF–. Report of a geological survey of Wisconsin, Iowa, and Minnesota : and incidentally of a portion of Nebraska Territory : made under instructions from the United States Treasury Department . utifully exhibited atmany points on the lake shore, and particularly at the narrow strait which con-nects Crane Lake with Sand Points Lake, and called by the Indians Wa-ba-bi-kon.At the entrance of this last lake the rocks are all granite (No. 531). At the north side of Sand Points Lake mica slate again appears, dipping north-northeast, at an angle of 15°. (No. 532.) It is traversed by granitic and felspat