1 lie Geology and Topography of Cincinnati. 137 



The next valley to the west is Deer Creek, and this separates 

 Mt. Adams from Mt. Auburn, and is of less extent than the first 

 one. For the extreme northern end of this valley is south of Oak 

 Street, Mt. Auburn, less than two miles from the river, and it here 

 meets a ridge which divides it from a valley draining to the north- 

 ward. 



The third of these valleys is that between Mt. Auburn and 

 Clifton Heights, and is even shorter than the second one, finding 

 its head, also, at the ridge before spoken of. 



Still further west is a yet shorter but steep valley, and then 

 there are no others until the broad valley of Mill Creek is reached, 

 and this is bounded on the other side by the long range of which 

 Mt. Harrison is a part. 



While all these valleys and their attendant heights have added 

 greatly to the picturesciueness of the city, they have, at the same 

 time, been taken advantage of in the building up of the suburbs. 

 The heights have been utilized for dwellings, while the valleys 

 between have proved invaluable for streets. Mt. Tusculum, Mt. 

 Lookout, Mt. Adams, are all dotted with residences. Walnut 

 Hills has become a city in itself, in many places as compactly and 

 solidly built up as the business centre ; while Crawfish and Deer 

 Creeks have been found of the greatest service in giving access to 

 the country on either side, and to the northward. Mt. Auburn and 

 Clifton Heights each occupy a peculiar position on a long, narrow 

 tongue of land projecting southward and ending in abrupt precipi- 

 tous banks, to ascend which steam has been evoked. Both ridges 

 are so narrow as to admit of but one street and a row of houses on 

 each side. Back of the houses the ground slopes rapidly down 

 into the ravines, and this narrow space has been the cause of the 

 stationary condition of these two suburbs, while Walnut Hills has 

 gone on so rapidly expanding. 



The two tongues of land are similar in another respect, for 

 while they both jut southward and end abruptly, their northern 

 ends abut against an east and west ridge which forms a connecting 

 link between the most western limit on Mill Creek and East 

 Walnut Hills. This ridge forms indeed the water shed, the divide 

 between the drainage directly into the Ohio river, to the southward, 

 and the round about passage into Mill Creek, to the northward. 

 The village of Avondale lies on the north side of this ridge, and 

 thus can by no possibility drain its sewage into the Ohio river 

 except through the medium of Mill Creek or Duck Creek. 



