THE GEOLOGICAL FORMATION AT PORT COLBORNE. 339 



The corniferous limestone here has a dip of 15 feet to the mile, 

 and at Fredonia, N. Y. State, 40 miles south of Port Colborne, it is 

 not found until the drill has penetrated over 900 feet, so that further 

 south a stronger dip prevails. 



The Niagara limestone outcrops 17| miles north of Port Colborne, 

 and, I am informed, has a dip of about 50 feet to the mile. Accord- 

 ingly we should find it at a depth of 875 feet, but we did not, as we 

 had the Medina from 833 feet down to 1500. 



Allowing that the dip is too great, it should be found between six 

 and seven hundred feet ; but, so far, I have been unable to find lime- 

 stone which could be definitely assigned to the Niagara, and it was 

 not until the second well was drilled that I obtained any limestone 

 characteristic of the Clinton, to which Mr. E. Orton, State Geologist 

 of Ohio, to whom I am indebted for examining a series of samples, 

 assigns the limestone found at 700 to 720 feet. At first not finding 

 any limestone characteristic of the Niagara or Clinton, I thought that 

 the whole stratum from the Lower Helderberg to 1500 feet was the 

 Salina, and that the red shale was the lower part, but the finding of 

 Clinton limestone shows that this was an eri'or. 



Permanent wate • was found at 26 feet. Salt water at 452 feet. 



A fair flow of gas at 454 feet, with a strong odor of sulphuretted 

 hydrogen. 



At 764^ feet the present supply was found, which is almost odor- 

 less. The well was drilled to 1500 feet, but there was no increase in 

 the quantity of gas. The accurate flow of the well has not been 

 estimated, but on its being closed for seven hours, the hydraulic 

 gauge registered 275 pounds, and was still going up. The gas is 

 used both for light and fuel, and gives satisfaction. 



