PHILLIPS. — COMPOSITION- OF NATURAL GAS. 81 



date from this well was found to contain the following percentages of 

 nitrogen : — 



(1) 1.38. 



(2) 1.40. 



8. "Well on the Souder farm, 12 miles east of Buffalo. This well 

 was drilled in 1892, and yields gas from the Trenton Limestone exclu- 

 sively. Mr. E. Coste, Engineer for the Provincial Natural Gas Com- 

 pany of Buffalo, is authority for the statement that the drill passed 

 through the base of the Trenton Limestone 30 feet below the point at 

 which the gas was obtained. Hence the horizon from which this gas 

 comes is extremely low in the geological scale as compared with the 

 productive formations of the Pennsylvania gas fields. 



Samples were collected at this well on September 3, 1896. The 

 results of the analyses are as follows : — 



(1) 4.57. 



(2) 4.55. 



9. Well on the Reinhart farm, near Sherkston, 10 miles east from 

 Buffalo. In this well the gas is derived solely from the Clinton Lime- 

 stone, which was reached at a depth of 590 feet. Examinations were 

 made of samples collected on September 1, 1896. Percentage of nitro- 

 gen found : — 



(1) 3.64. 



(2) 3.G1. 



10. "Well No. 12 of the Provincial Natural Gas Company at Sherk- 

 ston, Canada. Gas is derived solely from the Medina Sandstone, which 

 was reached at a depth of 850 feet. 



The samples were collected on September 1, 1896. Percentage of 

 nitrogen found : — 



(1) 5.17. 



(2) 5.10. 



In the case of all these Canadian wells the gas samples were shipped 

 at once to the laboratory, and the determinations made without delay. 

 All the samples so far mentioned were taken directly at the wells. 

 Several determinations of nitrogen have been made in the case of natural 

 gas from the mains supplying Allegheny. This gas was derived from 

 various wells scattered through a region of considerable area. 



VOL. XXXIV. — 6 



