“ The principal affluent rivers are: Red river, from the south; Winnipeg, Bloodvein, Berens and Poplar from the east; and the Dauphin and Saskatchewan from the west. It receives the surplus waters of lakes Manitoba and Winnipegosis, and discharges by the river Nelson into Hudson Bay. The river Winnipeg rises near Savanne station in 48° 47′ N. and 89° 57′ W., and flows in a westerly direction under the names of Savanne, Seine, and Rainy rivers to the Lake of the Woods; issuing thence as the Winnipeg, it flows N.W. with an exceedingly tortuous and turbulent course to the lake of the same name. ”