In the Cisco Lake Region the drainage is not so good as in the vicinity of Little Girl's Point, and the forests of that district are of a type somewhat intermediate between the wet hardwood forest and the dry hardwood forest. In the Cisco Lake Region the topography is much broken, there being many small hills and ridges, and many small depressions, often poorly drained. In the damp depressions, if not wet enough for a bog, arbor-vitae and hemlock are common, while on the ridges sugar maple and linden are characteristic, though hemlock occurs here sparingly also. There is accordingly much local variation in tree forms, but the whole forest is decidedly of a hardwood type. The dry hardwood forests of the Little Girl's Point Region are inhabited by many deer-mice, while only a few of this species are found in the wet hardwood forests near Gogebic Lake, bob-tailed shrews being there the most abundant mammal and red-backed voles being common, both of which are rare in the other districts. In the dry hardwood forest near Little Girl's Point four woodland jumping mice (Napaeozapus) were taken, while in the Cisco Lake Region only two were taken in a period twice as long, and at Gogebic Lake none were secured. These observations indicate that moisture conditions in hardwood forests have an important influence on the mammal fauna. _Mountains_ _Rock-bluff habitat:_ Rock exposures are rare in the region studied. However there are several high hills with steep exposures of rock a short distance north of Ironwood and Bessemer. These hills could not be studied in the time available, and the only cliff examined was on a small range of hills northeast of the station of Lake Gogebic. On one of these hills is a nearly perpendicular rock cliff about 200 feet high and facing to the southward. The small talus slope at the bottom is overgrown with shrubs and trees, and on the small ledges and gullies of the face of the cliff a few small trees, shrubs, and herbs are also growing. The most conspicuous plants of the rock habitat are scrub oaks, aspens, and heaths. No trapping was done in the habitat, and no notes on mammals were secured. Probably the mammal fauna is not very large. _Mountain-heath habitat:_ A narrow, poorly developed belt of heath fringes the upper edge of the rock cliff examined north of Lake Gogebic. Characteristic plants are the blueberry and bearberry, mixed with creeping juniper and a few scattered grasses. The habitat is very narrow and is closely encroached upon by shrubs and trees, such as sumac, cherry, white pine, jack pine, oaks, aspens, and paper birch. Signs of fox were noted at the edge of the cliff, but no trapping was carried on here. _Air_ _Aerial habitat:_ The only aerial mammals are the bats, of which four species were taken during the summer. The flying squirrel is not considered to be a true aerial form. _Burns and Clearings_