394 Intelligence and Miscellaneous Articles, 



becomes turbid, and yields crystals of the same matter mixed with 

 red oil, which precipitates to the bottom of the vessel: it is difficult to 

 obtain this in a pure state. There often comes down with it some solid 

 matters which give it consistence, and which give it the appearance 

 of fat or even of several fatty matters. In order to separate the oil, it 

 must be subjected to a slight pressure in a cloth, and alcohol poured 

 upon it, which leaves the crystals. This alcohol is turbid on account 

 of the oil which it contains. Some aether is to be added to it, which 

 redissolves the oil, and renders the liquor clear, when exposed to 

 spontaneous evaporation. A part of the aether slowly evaporates j 

 the remainder holds the crystalline matter in solution, and allows the 

 oil, as it is formed, to precipitate to the bottom of the liquid. When 

 the stratum is rather thick, it is to be removed by a pipette and fil- 

 tered, and it is then pure and reddish. This oil M. Couerbe calls 

 e'leancephol, or oil of the brain. 



As to the very abundant portion of the brain remaining after treat- 

 ment with aether and alcohol, and which the author calls n^vriline, 

 it is partly composed of albumen, coagulated globules, and of a mem- 

 branous substance soluble in potash. 



Analyses of the preceding Substances. 



Ce're'brote. — M. Vauquelin appears to have been acquainted with 

 this substance, which he has described under the name of white fatty 

 matter , and which has since been called myclocone by Kiihn j but ac- 

 cording to some of the characters which M. Vauquelin has assigned to 

 his white fatty matter, it seems that he did not obtain it pure, since 

 he says that it is fusible and viscid, whereas cerebrote is infusible, 

 and does not stain paper. When properly dried at a gentle heat it 

 becomes friable, and may be pulverized j it is soluble in boiling al- 

 cohol, and but slightly so when it is cold. The process for extracting 

 it is dependent upon this difference. It does not saponify with a so- 

 lution of potash or soda, a property also observed by Vauquelin. 



Ce>£brote is composed of 



Carbon 67-818 



Hydrogen 11-100 



Azote 3-399 



Sulphur 2-138 



Phosphorus 2332 



Oxygen 13213 



100- 



Vauquelin does not mention the existence of sulphur in it. 



Ce'rance'phalote. — This substance is solid, brown, insoluble in al- 

 cohol and in water, but dissolved by 25 times its weight of cold 

 aether. It softens by heat, and without becoming perfectly fluid : when 

 dried it is elastic, like caoutchouc. M. Vauquelin has not mentioned 

 this substance, but Kiihn appears to have had a glimpse of it. Sul- 

 phuric acid attacks it with great difficulty: nitric acid reduces it to 

 its elements, and converts the sulphur and phosphorus into acids. 



