Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIV. Xo. 3. — November, 1898. 



ON FLUCTUATIONS IN THE COMPOSITION OF 

 NATURAL GAS. 



By Francis C. Phillips. 



Aid in the Work described in this Paper was given bv the Acade.mt from the C. M. Warren 

 FcND FOR Chemical Research. 



