228 



Geological Society : — 



We would call attention to the regular parallelism between 

 the American Marsh hydrocarbons and the Russian Kerose 

 hydrocarbons. 



Number of 

 small carbon 

 atoms in the 

 hydrocarbon. 



Russian. 



American. 



Sp. Gr. 

 at 15°-5. 



Boiling- 

 point. 



Sp. Gr. 

 at 15° -5. 



Boiling- 

 point. 



XV 



0-7510 

 0-7576 

 0-7606 

 0-7711 

 0-7768 

 0-7843 

 0-7975 



96-5 

 106 

 116-5 

 127 

 138 

 148 

 158 



07202 

 0-7305 

 0-7355 

 0-7468 

 0-7521 

 0-7579 

 0-7633 



o 



95 

 107 

 119 

 130 

 141 

 152 

 160 



xvi 



xvii 



xix 



XX 



xxi 







Showing that the same carbon-condensation in the hydro- 

 carbon gives a slightly heavier liquid in the Russian series. 

 The difference in specific gravity being as follows : — 



xv '0308 



xvi. ...... -0271 



xvii -0251 



xviii -0243 



-0247 



-0264 



-0342 



xix. 



XX. 



XXI. 



Showing a small but not always exactly the same increment 

 of specific gravity in the case of the Russian hydrocarbon as 

 compared with the American. 



XVII. Proceedings of Learned Societies, 



GEOLOGICAL SOCIETY. 



[Continued from p. 152.] 



March 0th, 1895.— Dr. Henry Woodward, F.R.S., President, 



in the Chair. 



THE following communications were read : — 

 1 . ' A new Ossiferous Fissure in Creswell Crags.' 

 H. Duckworth, Esq., and F. E. Swainson, Esq. 



By W. L, 



