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JOUKNAL OF MAMMALOGY 
rambles through the woods, and along the roadside when traveling by machine 
at night. Some species of cotton-tail is present, but no specimen v/as procurable 
for identification. 
18. Red-Squirrel. Sciurus hudsonicus hudsonicus (Erxleben). — Common 
everywhere in the woods and about the towns. The oak trees furnish the chief 
item of food for the species, though the hazelnut {Corylus sp.) is common enough 
to be of some use. Young were seen playing about the nest on July 21. 
19. Lake Superior Chipmunk. Eutamias quadrivittatus neglectus (Allen). — 
Two species of chipmunks are found within the county, of which this is the 
more common. Found everywhere through the wooded areas where it feeds upon 
any available nuts. Unlike the next species, this little fellow shows a marked 
inclination to climb. 
20. Gray Chipmunk. Tamias striatus griseus Mearns. — Quite common 
throughout the county, both in the hardwood and evergreen thickets. Found 
co-existent with the preceding species, and both seem to show a preference for 
the hardwoods. This species shows a decided preference for the ground, and is 
seldom found “up a stump.” Food consists of berries and nuts. Called the 
“gray” chipmunk because of the gray tinge of the upper parts. 
21. Gopher. Citellus tridecemlineatus (Mitchill). — Rare in the cleared lands, 
but found occasionally in the cultivated areas about the towns and farms. This 
county probably represents about the northern and eastern limit of the species 
in the state. 
22. Woodchuck. Marmota monax canadensis (Erxleben). — Quite common 
throughout the county and often seen, either in the clearings or along the roads. 
A woodchuck took up his residence under the cabin floor, but departed hurriedly 
when the family — and Bubbles — arrived. This hole was quickly — and per- 
manently — occupied by the afore-mentioned skunk. 
23. Flying Squirrel. Glaucomys sabrinus sabrinus (Shaw). The flying squir- 
rels are always very little in evidence, and unless special search is made their 
presence would never be suspected. This species is relatively common through- 
out the county, both in the woods and about the homesteads and towns. 
24. Porcupine. Erethizon dorsatum dorsatum (Linn.). — Common throughout 
the county in all suitable places, yet not nearly as common as the writer found 
the species either in northern Wisconsin or in northern Michigan. This is, of 
course, not to be regretted, for the animal does a large amount of damage. Pre- 
fers the hardwood thickets, and feeds largely on the top-most branches of the 
ash {Fraxinus americanus) and the aspen {Populus tremuloides). Along the 
lake shores it feeds upon the succulent stems and roots of the arrow-heads {Sagit- 
taria sps.) and the white water lily (Castalia odorat'a). 
25. Beaver. Castor canadensis michiganensis Bailey. — Very nearly extermi- 
nated within the county limits. The writer saw but a single colony, apparently 
healthy and in a thriving condition, on Beaver Lake. The house here was of 
good size, and of the shore-line type, with the entrance in about eighteen 
inches of water. Evidence of activity was found in well worn log-shoots, and 
in a small ash {Fraxinus americanus) cut the night before. Until a year ago 
(the fall of 1918) there was a colony of two small houses in Rat Creek, between 
Little and Big Rat Lakes. Here a dam had been built, which seriously damaged 
fourteen tons of good hay belonging to a homesteader. Now the beaver — and 
