138 Cincinnati Society of Natural History. 



While the ridges have, as shown, been utilized for the pur- 

 poses of residences, the valleys have been ecpially serviceable for 

 streets and roads. Crawfish Creek, for exaiiii)le, is used not only 

 by a wagon road, but by the Mt. Lookout Dununy Railroad. 

 Deer Creek valley serves for the Northern Narrow Gauge, Hunt 

 street and Gilbert Avenue. The ravine between Mt. Auburn and 

 Clifton Heights serves Vine Street an excellent purpose, in climb 

 ing to the top, by a long, gradual slope. l"he ravine next west is 

 used by Clifton Avenue, while the great Mill Creek valley is of 

 incalculable advantage to numerous railroads and the Miami 

 Canal, enabling these to reach the heart of the city with no grades 

 of any consequence whatever. 



The tracing of the divide, which separates the Ohio river 

 drainage from that of Mill Creek, is an interesting matter. Inves- 

 tigation shows it pursues a general north-east and south-west direc- 

 tion, and for part of its course can still, with all the changes 

 attendant upon the building of a large city, be followed in (juite a 

 definite manner. Beginning at the extreme southwest end, at a 

 point overlooking Mill Creek, we find it follows a line to the north- 

 east, and touches the western end of Calhoun street in Clifton 

 Heights. It then turns east and follows a little to the south of 

 Calhoun, across to Mt. Auburn, and forms the ridge which has 

 already been referred to, as the north end of the spurs, occupied 

 by Ohio and Auburn Avenues. Just where Calhoun street and 

 Ohio Avenue come together there is a deep ravine, trending to the 

 south, through which the water is carried to the Ohio river, and 

 up the lower part of which Vine street has been built. On the 

 north side of Calhoun is another deep ravine, which trends north- 

 ward, finally forming part of Burnet Woods Park, and carrying 

 other water into Mill Creek somewhere near Ross Lake. Calhoun 

 street is, in most i)laces, just wide enough for the road-way and 

 houses on each side, and back of the houses the ground slopes 

 rapidly north and south. Following the divide, as it is now plainly 

 seen to be, to the eastward, we find that the Mt. Auburn water 

 tanks, on Auburn Avenue, stand upon it, that Auburn street 

 follows its winding course, and is of the same character as Calhoun 

 street, namely, just wide enough for the road-way and houses on 

 each side. When Highland Avenue is reached the divide trends 

 northeast again, and upon its highest point is situated the house of 

 John Shillito. Thence it follows Oak street to the Reading road, 



