20 THE FI,CK)D OP 1 843. 



ularly noticed, in the order that they occur in proceeding 

 westward. 



Codd's Creek. — It has been before observed that the flood 

 in this stream did not rise to an unusual height. It is only 

 adverted to at all as a matter of contrast, and for the purpose 

 of defining the eastern border of the district of country upon 

 which the greatest force of the rain storm was expended. At 

 Seller's mill, on the West Chester road, this stream only 

 attained the height of six feet and half, and at the head of 

 tide water it did not reach the height of previous floods, by 

 two feet. Nailor's run, its principal tributary, was raised 

 about in an equal degree. Near the sources of both these 

 streams, in the township of Haverford, the rain fell with con- 

 siderable violence for some time. At Haverford School, 

 which is within the drainage of Cobb's creek, 5.82 inches of 

 rain fell, as accurately measured by a rain guage kept at that 

 institution. 



The contrast between the flood in Cobbs and Darby creeks 

 was very striking at the head of tide water, where they 

 approach each other within less than a mile. At the time the 

 latter had risen to a height of about seventeen feet and swept 

 every thing before it, the former presented nothing beyond 

 an ordinary freshet. 



Darby Creek. — Proceeding westward, this is the first large 

 stream which properly comes within the scope of the present 

 inquiry. Ithen creek, one of its principal branches, attained 

 a height never before witnessed by the oldest inhabitants, and 

 was the cause of considerable destruction of property. The 

 bridge over this stream where it is crossed by the old Lancas- 

 ter road, near Radnor Friends' Meeting house, was carried 

 away. This was a stone bridge with a single arch of twenty- 

 five feet span, and its location within about two miles of the 

 head waters of the creek. ICven here the volume *)f water 

 was so great thai in fcjrcing itself through the aperture pre- 

 sented by the arch, the abutments were undermined to such 

 an extent as to cause the brid^-e to fall. The mill dam of 



