HYDROLOGY. 155 



In the town of Byron, adjoining Fond du Lac on the south, on the 

 farms of Mr. Henry Bush, Mr. D. D. Jones, and Mr. Searles, there 

 are several wells having a rather scanty and variable flow. They are 

 not, however, immediately affected by rains. The wells belonging to 

 Mr. Jones are TO feet in depth. The vein was found in a bed of 

 quicksand at least 10 feet thick. Rock was struck at Mr. Searles' at 

 a depth of 170 feet but did not yield a flow. The fountain head of 

 these is probably in the bluffs to the south, as indicated in the profile. 



The Artesian wells of the town of Oakfield are located in sections 

 9, 15, 16 and IT, and occupy an extensive depression stretching north- 

 eastward to Fond du Lac. Mr. II. D. Hitt has three wells from 68 to 

 T4 feet deep. He gives the following as a typical section: 



1. Surface soil. 



2. Marl. 



3. Blue clay. 



4. Small vein of sand. 



5. Alternating blue clay, sand and gravel. 



6. Rock at from 48 to 54 feet from the surface. 



Water flowed in a small stream before the rock was struck. On 

 the same authority I learn that Mr. "Whittaker secured a fine stream 

 in a vein of sand beneath blue clay, at from 20 to 22 feet from the 

 surface. Mr. S. Scovil, residing on section IT, has two flowing wells, 

 one 48 feet and the other T5 feet deep. The former, as I was inform- 

 by the proprietor, is 3T feet in blue clay and 12 feet in limestone. It 

 is situated near the western extremity of the depression before men- 

 tioned, where the surface gradually rises toward the drift hills that 

 form the "divide" between the Mississippi and St. Lawrence basins. 

 The latter lies somewhat farther eastward, and penetrates 50 feet o 

 pure clay without seams of sand or gravel, and extends 25 feet into 

 the limestone beneath. This well has a brisk steady flow about one 

 inch in cross section, and is not noticeably affected by rains. The 

 former one, when visited, had but a slight stream which broke into 

 drops in falling six inches, and was said to be much affected by rains, 

 the change being noticeable within 24 hours. The wells of Mr. Hatch 

 and Mr. "Wells are similarly affected. These are said not to penetrate 

 the rock. We gather from these facts that there are two systems 

 here, the more superficial, whose veins lie near the junction of tho 

 drift and limestone, being sometimes above and sometimes below, and 

 whose reservoir is in the vicinity and is superficial; and the deeper 

 one, whose fountain head is more distant. The reservoirs in both 

 cases are probably to the westward or northwestward. 



