20 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Taubes Barludu* distilled 1115 c.c. of crude Roumanian petroleum 

 from the deposits on the south slope of the Carpathians, which are 

 probably connected with the Galician oil zone, with the following 

 results: — 



Q c.c. Per cent by Volume. 



30-125 150 13.5 



125-225 385 35.5 



225-280 IfiO 14.3 



280-315 98 8.1 



In an examination of Burmese petroleum, Romanis f obtained an 

 oil from Yay-nan-Chaung with a specific gravity of 0.8590, which 

 solidified at 24°. An oil from Arracan with a specific gravity of 

 0.825 at 32° contained considerable benzol and other aromatic hydro- 

 carbons; upon distillation, the following results were obtained: — 



100.00 



Markownikoff and Ogloblin examined the ash of Caucasus petro- 

 leum by igniting the residue of distillation. They found 0.09 per cent 

 of ash calculated for the original quantity of crude oil, and it consisted 

 chiefly of the oxides of calcium, iron, and aluminum. Traces of cop- 

 per and silver were also found. We have determined by combus- 

 tion in oxygen the percentages of carbon and hydrogen in coke from 

 the refinery residue of the distillation of Ohio petroleum ; the per cent 

 of carbon was 95.06, and that of hydrogen 4.85. A determination of 

 nitrogen by the Kjeldahl method gave 0.31 per cent. The quantity of 

 ash in the coke was determined by burning off the carbon, and the 

 weight of ash thus obtained corresponded to 0.11 per cent of the coke 

 burned. In attempting to estimate the percentage of ash in the crude 



* Zeit. Ang. Chem., 1889, p. 606. t Cliem. News, LIX. 292. 



