_Region at the north end of Gogebic Lake._ Most of the region about the north end of Gogebic Lake is low and wet. A number of small black ash swamps occur near the lake, and further back there are extensive black spruce bogs. The main forest is of a much mixed wet hardwood type, sugar maple, linden, yellow birch, elm, and hemlock, being the dominant species. The forest in most places reaches the edge of the lake, though a few sandy beaches occur. However, the level of the water in the lake has been raised a few feet by a dam across the outlet, and beaches were probably more abundant before this occurred. The lake is so large, about 13 miles long by 1 to 2 miles broad, that wave action is quite pronounced. One beaver meadow was studied, this meadow including areas of grasses and of sedges, traversed by ditches, small mud-flats covered with low rushes, and alder thickets. Just north of Lake Gogebic Station there are some high hills having bluffs on the southern exposures. These hills were visited, but they had been extensively logged and burned over and no attempt was made to trap for mammals on them. Some large burned areas have grown up to sapling forests of aspens. Near the towns of Lake Gogebic and Merriweather nearly all the forests have been cleared away, but farther south on the sides of the lake the woods are still in their natural condition. HABITATS The habitats studied in Gogebic and Ontonagon counties may be listed as follows: Exposed shores: Open-water Beach Dirt-bluff Forest--shore Protected shores: Water lily Pondweed Rush Submerged-sedge Cat-tail Willow-thicket Mud-flat Meadow: Ditch-border Tall-sedge Grassy-meadow Alder-thicket Swamps: Black ash swamp Arbor-vitae swamp Bogs: Leather leaf bog Sphagnum bog Black spruce--tamarack bog Forests: Hemlock forest White pine forest Wet hardwood forest Dry hardwood forest Mountains: Rock-bluff Mountain-heath Air: Aerial Burns and clearings: Herbaceous stage Shrub stage Paper birch--aspen stage Young hardwood forest stage Artificial conditions: Overflow swamp Cultivated-field Edificarian This list of habitats is admittedly not complete for the regions visited, but is intended to include those which we studied. We had no opportunity of studying either the shores of a large river or jack pine ridges, both of which situations will undoubtedly have habitats not here recognized.