NOES ON Lis KANE AVEAZO© AND OTHER OLD 
GCEcsciAk OULLE GS IN, SOUTHERN MICHIGAN: 
HAVING occasion recently to cross the state from Melvin 
near Port Huron to Plainwell, the writer took advantage of the 
opportunity to make the trip by wheel for the purpose of study- 
ing some of the problems of glacial drainage suggested by 
previous studies. It had been observed earlier that between 
Plainwell and Battle Creek the Kalamazoo River occupies a 
wide valley evidently of prior origin. Above Battle Creek the 
valley is much narrower, while a broader channel bears off 
to the northeast and furnishes an outlet for the Battle Creek. 
In eastern Michigan the observations of Taylor, Gilbert, 
and others have disclosed the existence of several old outlets, 
though the courses of some of them have not been completely 
traced. One of these, the Imlay, was traced by the above 
authors northward past Imlay to North Branch, thence south- 
westward to Columbiaville. Further, in a letter to the writer, 
Dr. A. C. Lane, Assistant State Geologist, has pointed out the 
existence of an old channel between Milford and Hamburg 
Junction, which is now occupied by the Huron River. Did the 
Imlay outlet discharge by way of the Kalamazoo or was the 
latter the outlet for the waters of the Milford channel? While 
the time at the writer’s disposal did not permit a full investiga- 
tion, the facts obtained are deemed of sufficient interest to war- 
rant their publication as acontribution toward the elucidation of 
the glacial history of the state. 
The Imlay outlet.—This outlet, described and mapped by 
Taylor,’ was crossed by the writer near its summit level about 
ten miles southwest of Brown City. South of this point the 
swamp which marks the position of the channel is drained 
toward the northeast by Mill Creek. As far as Yale this creek 
«Bull. Geol. Soc. of Amer., Vol. VIII, 1897, pp. 31-58. 
477 
