572 PROCEEDINGS OF THE PHILADELPHIA MEETING 



The fourth paper was presented in abstract by the Secretary, the author 

 being absent, as follows : 



NITROGEN GAS WELL AT DEXTER, KANSAS 

 BY ERASMUS HAWORTH 



I Abstract'] 



The well, 400 feet deep, is in Cowley county, southern Kansas, the top being in 

 Permian strata and the gas-bearing sandstone lying near the division between the 

 Lower Permian and the Upper Coal Measures. The static pressure of the gas is 

 120 pounds and the flowage capacity is 5,000,000 cubic feet daily. An amount 

 of gas equal at atmospheric pressure to 125,000,000 cubic feet has been allowed 

 to flow from the well. The following table of its composition was made after 

 the gas had been allowed to freely flow for eleven days through an 8i-inch pipe 

 and for three days more through a 3-inch pipe. 



Carbon dioxide 0.00 



Carbon monoxide 0.00 



Oxygen 0.20 



Hydrogen 0.80 



Methane (CH 4 ) , 15.02 



Nitrogen... 71.89 



Inert residue 12.09 



Total 100.00 



The full paper is published in Science, volume xxi, February 3, 1905, 

 pages 191-193. 



The fifth paper was 



PIEDMONT DISTRICT OF PENNSYLVANIA 

 BY F. BASCOM 



The paper was discussed by B. K. Emerson, Persifor Frazer, C. D. 

 Walcott, and the author. It is printed as pages 289-328 of this volume. 



The sixth paper was then read, as follows : 



CORRELA TION OF MA R YLA ND A ND PENNS YL VA NIA PIEDMONT FO RMA TIONS 

 BY EDWARD B. MATHEWS 



The paper is printed as pages 329-346 of this volume. 



The President called Vice-President H. S. Williams to the chair. 



The seventh and last paper of the morning session was read : 



COCKEYSVILLE MARBLE 

 BY EDWARD B. MATHEWS AND W. J. MILLER 



This paper is printed as pages 347-366 of this volume. 



