DETAILED RECORDS. 219 
Record of well of Davenport Malt and Grain Company. 
'rift: Feet. 
Sand - 35 
Hardpan and gravel 35 - 66 
Sandy shale. 66 - 81 
Gravel 81 - 91 
Loose limestone 91 - 92J 
»evonian( ?) : 
Limestone 92^- 99 
Caving sand and gravel 99 - 102 
Sandy limestone 102 - 111 
Shale Ill - 122 
ilurian : 
White limestone 122 - 283 
Sandy shale 283 - 298 
Sandy limestone 298 - 421 
Brown limestone 421 - 432 
taquoketa : 
Blue shale 432 - 506 
Limestone 506 - 596 
Limestone and hlue shale 596 - 636 
Sandy shale. 636 - 661 
Gray shale 661 - 761 
Trenton : ' ' 
Limestone 761 - 929 
Flinty limestone 929 - 931 
Brown limestone 931 - 996 
Caving limestone 996 -1, 003 
Blue and gray shale. 1, 003 -1, 025 
Peter: 
Sandstone 1, 025 -1, 087 
neota : 
Shale and caving rock 1, 087 -1, 117 
Limestone 1, 117 -1, 156 
Limestone and blue shale 1, 156 -1, 162 
Limestone and shale, caving . . 1, 162 -1, 184 
Limestone and shale 1, 184 -1, 201 
Red marl and limestone 1, 201 -1, 250 
Sandy limestone. 1, 250 -1, 290 
Sandstone . 1, 290 -1, 3,50 
Gray limestone 1, 350 -1, 450 
Brown limestone 1, 450 -1, 575 
Sandy limestone 1, 575 -1, 653 
l Diameter of well, 12 to 5 X \ inches. Casing used, 92| feet of 12-inch to rock, 20 feet of 
!-inch, 40 feet of 6J-mch, 81 feet of S^-inch. Well began to flow at 1,400 feet. Flow, 
50 gallons per minute. 
