12 PROCEEDINGS OP THE AMERICAN ACADEMY. 



the liquid were read on a Mahlke 550° thermometer. The oil 

 began to distil with much decomposition at 385° in the vapor, and 

 415° in the ]i(|uid. One half distilled with the temperature in the 

 liquid below 430'^. Doubtless the temperatures of distillation were 

 much reduced by the decomposition. Since we liave found that dis- 

 tillations below 250° may be carried on successfully without serious 

 decomposition in an atmosphere of carbonic dioxide, when we return 

 to the distillation of the higher constituents this method may be 

 serviceable. 



Ohio Petroleum. 



In the study of Ohio petroleum I have been aided by Mr. E. J. 

 Hudson.* Besides the publications from this Laboratory on the sulphur 

 compounds f and those of Orton, t I am aware of no published state- 

 ments concerning the composition of Ohio sulphur petroleum. The 

 crude oil which formed the basis of our work was received from 

 the Peerless Refining Company, Findlay, which controls a large sec- 

 tion of oil territory. When received, it was of a somewhat thicker 

 consistency than ordinary Pennsylvania oil, with a slight odor of 

 hydric sulphide that is usually observed in crude sulphur oils. It con- 

 tained a small quantity of water, which was removed completely only 

 after long standing with fused calcic chloride. In determining the 

 specific gravity of Ohio sulphur petroleums, oils were collected from 

 wells at different points in the Findlay and Lima fields. The deter- 

 minations were made at 20°. 



Findlay Field. 



Specific Grayity. 



(1) Barnsville 0.8272 



(2) Heilstone Oil Co., Well No. 2, Hancock County 0.8296 



(3) Ohio Oil Co., Wood County 0.8194 



(4) Langmade Well, No. 4, Portage, Hancock County 0.8149 



(5) Peerless Refining Co., Well No. 2, Liberty, Han- 



cock County 0.8278 



(6) Peerless Refining Co., Well No. 5, Baltimore, 



Wood County, 0.8239 



* A part of this work formed the subject of a tliesis by Mr. Hudson for the 

 degree of Bachelor of Science 



t These Proceedings, XXV. '218; Amer. Chem. .Journ., XVI. 83. 



t Ohio State Geological Reports, 1880, 1888, 1890 ; U. S. Geological Report, 

 1886-87. 



