Lesley.] [March 6, 



January 5 and February 2, 1891, the first six wells starting with 460 Ibs. 

 and ending with 70 and 65 Ibs. ; (e) a diagram of the mode of piping the 

 Agnew well ; (/) a map of the country between Pittsburgh and Johns- 

 town, showing location of groups of wells. 



Mr. Fulton was prompted to sending me the data described above by 

 his remembrance of my address, some years ago, at Pittsburgh, before the 

 American Institute of Mining Engineers, in which I reiterated my belief 

 on geological grounds in the comparatively speedy extinction of the rock 

 gas industry of the country. He adds : "You will notice that recently 

 one of the wells [at Grapeville] has been deepened to reach the 'Gordon 

 sand,' and that a small supply of gas was found in this second and lower 

 horizon of natural gas, but not enough to warrant any hopefulness of 

 its maintaining the supply. A part of our works are being supplied yet 

 with the natural gas from Grapeville, but it is weakening so fast that we 

 have got to supplement it with artificial gases " (February 26, 1891). 



My warrant for publishing in the Proceedings of this Society these most 

 important geological and historical data is found in Mr. Fulton's words : 

 "I do not think that there is anything in this report that is so private or 

 confidential that it should not be made known; and you can therefore use 

 the matter in these reports as you think wise. At the Cambria works we 

 are using the Archer oil gas to take the place of the natural gas, and we 

 are finding this to be a very good substitute. As you know, the Archer 

 process consists in vaporizing fuel oil, and mixing at a very high heat 

 steam with the oil. We have also opened our mines again here and are 

 using coal in a great many sections of the works " (March 13, 1891). 



October 12, 1888, the Westmoreland and Cambria Natural Oil Company 

 owned seven (7) wells, located principally along Brush Creek, northeast 

 of Grapeville, Westmoreland county, Pa. Three wells were connected 

 with the pipe line ; the others were held in reserve, two of them being 

 drilled to a thin crust of hard rock (silica) just overlying the gas sand, 

 which served as a hermetical cover to prevent the escape of the gas, even 

 at its high pressure in the gravel-sand rock beneath it. 



This fact is important as explanatory of the retention of the gas in the 

 rock for past ages. 



The wells are 1100 to 1400 feet deep, according to their locality in the 

 valley or on the hill, the gas rock lying nearly horizontal. 



The pipe in the well is of 5 inch diameter. 



The two wells, A, A 1 , on the map, were turned on full for the pipe to 

 Johnstown, the well R being turned on more or less as a regulator of the 

 supply at the Cambria works. 



The pressure at top of well was 335 Ibs., as the 10-inch main to Johns- 

 town would not stand a much higher pressure. 



There seemed no difference in strength or volume of gas per minute 

 blown off (free) by one of these wells, in Mr. Tuttle's presence, 

 compared with that which he saw two years before at a free blow from a 

 well just north of Grapeville Station. 



