178 The American Geologist, September. iMi7 
Deep Welh. 
About thirteen years ago a well was drilled a little east of Gor- 
don park, to a depth of about 520 feet. (Well No.'l on map.) 
Absence of rock at that deptli, and inability to make h.eadway 
in the quicksand and gravel, caused the well to be abandoned. 
As this seemed a phenomenal depth, as compared witli previous 
wells, without striking rock, it was doubted by some at that 
time whether such could be the case. But subsequent borings 
have confirmed this record in niany diiferent places, within and 
without the city limits, though none have quite reached the 
depth a'ssigned to this one. Another well, No. 2, drilled within 
the last few years near the intersection of Madison nnd Hough 
avenues reached rock at the depth of 475 feet. This is, I 
think, the deepest well to show rock in the line of deep drift, 
although it may not reach the deepest point in the preglacial 
valley. Two other wells have been drilled along this north- 
east and southwest line in neither of which was rock reached. 
One is at the west end of Mound street. No. 3, east of Forest 
City park and was abandoned at a depth of 315 feet, no rock 
being reached. The other, No. 4, was on the property'' of the New- 
burg Fertilizer Co., situated on the Cuyahoga flats, outside the 
city limits. The well drilled here was abandoned in the drift at 
a depth of 350 feet. The record of this well is significant, ow- 
ing to its distance from the lake, being about eight miles 
from Gordon park, and its situation being seventeen feet 
above lake level. This well would then give a clear record of 
drift belo%v lake level of at least 333 feet. In regard to the 
level of the two wells previously mentioned : well No. 1, east of 
Gordon park is situated not over fifty feet above lake 
level ; its depth being 520 feet would leave 470 feet as known 
depth to which drift extends below lake level. The other well, 
No. 3, at west end of Mound street, while not so deep, still 
serves to show the course of the valley. The levelling for this 
is 112 feet, giving a depth of 203 feet below lake level. The 
levelling for the well 475 feet deep at Madison and Hough Ave. 
is 83 feet. This gives 392 feet below lake level at this point. 
While these are not all the deep wells, they are among the 
deepest and serve to give us a clue to the old channel, and as 
shown on the map, it is seen to be far to the east of the pres- 
ent river mouth. To show the relative proportions of the 
