THE SYLVAN!. \ SAND IN OHIO. 33 



the Lower Helderberg limestone. If this Cleveland sand is not the equivalent of the 

 Sylvaniasand, it is obviously a similar deposit." 



This Rolling Mill well reaches the Clinton red limestone, at about 3050 feet, bein°- 

 fully 1000 feet above the Trenton limestone. This well demonstrates the existence of 

 vast rock salt deposits, which show an original depression in the surface here at that 

 age. 



There is a well bored on the Jewett farm about one and one-quarter miles south of 

 the Cleveland Rolling Mill well. It is on ground fully one hundred feet above the 

 mouth of the Cleveland Rolling Mill well. This well is located above the Berea 

 Grit, southeastwardly from the quarry, near the Insane Asylum. At 1414 feet it 

 was through the Erie and Huron shales and struck limestone. The limestones and 

 shales below this are similar to those in the Cleveland Rolling Mill well. At 1720 

 feet salt water was struck ; at 1780 feet, or two or three feet in the Sylvania sand, a 

 supply of gas was found, and the well was drilled no deeper. This was in July, 1888. 

 Allowing for difference in elevation between this well and the Cleveland Rolling 

 Mill well, the sand is found at about same depth. This well has not been drilled 

 through the sand. It is cased, but makes about eight gallons of salt water per day. 

 It yields, I should judge, about 150,000 to 175,000 cubic feet of gas per day, and has 

 continued to do so excepting when the salt water has been allowed to accumulate. 

 The gas has the general characteristics of the Pindley gas, with perhaps not 

 quite so much sulphureted hydrogen in it. I did not see the [pressure gauged, 

 but was told at the well that on one occasion it was, in half an hour, 225 pounds and 

 rising. The same parties bored another well on the Jewett farm, locating it about 

 500 feet south of the other and on about five feet higher ground. Its drillings are 

 the same as the other two wells previously referred to ; but this well was bored through 

 the Sylvaniasand, which was about thirty feet in thickness and drilled about 50 feet 

 below the sand, in all about 18G0 feet. In the sand in this well but very little gas 

 was found. From 1720 feet, veins of salt water were met. This well was not suc- 

 cessfully cased, and on reaming it for re-casing, in July, 1889, the tools became fast- 

 ened in the well. 



Still another well has been put down during the past year, which gives some addit- 

 ional interest to the Sylvania sand. It is located in Euclid township, near what is 

 known as " The Old Salt Works," on the Smith farm, and is about half a mile from 

 the shore of Lake Erie. It is about thirteen miles northeast from the Cleveland 

 Rolling Mill well, and not far from the town of Nottingham, in Cuyahoga county, 

 Ohio. The mouth of this well is from 60 to 70 feet above the level of Lake Erie. 

 It struck limestone at 1168 feet, salt water at about 1470 feet, and found the Sylvania 

 sand at 1540 feet, with no gas ; found this sand rock 50 to 75 feet thick, and very sharp 

 and fine grained sand. Well not cased and abandoned at 1685 feet deep. 



Here, then, we have four deep wells, whose geological developments are similar and 

 conformable one to the other. The measurements are as accurate as I could obtain 

 from the parties in charge of the wells. These four wells do not encourage deep bor- 

 ing in the hope of striking, in Cuyahoga county, a pinnacle of the Clinton lime- 

 s tone which is found petroliferous in some parts of the State of Ohio, and much less 

 in the hope of finding the Trenton limestone in condition for either gas or oil. 



The Jewett farm well, which is producing the gas from the Sylvania sand, in- 

 dicates, however, a new horizon in which gas and perhaps oil may be stored. By 

 reason of some natural connection with the petroliferous formations in the Clinton 



V— Bull. Geol. Soc. Am., Vol. 1, 1889. 



