426 ANIMAL BODY: 



cerebrot, stearoconot, and cephalot. 1 Fremy, who has paid much 

 attention to the subject, found albumen, cholesterin, two peculiar 

 acids cerebric and oleophosphoric acids, besides traces of olein 

 margarin, and their acids, in the brain. These acids are partly 

 free and partly (especially the oleophosphoric) combined with soda. 

 These fatty matters are contained almost exclusively in the 

 white or medullary substance ; after their removal a substance 

 remains, analogous to the gray matter. Fremy has also de- 

 tected these peculiar acids in the spinal cord and nerves. 



The quantity of water in the brain is very considerable, and 

 amounts to about 80^: Fremy estimates it at 88,the remaining 12 

 consisting of 7g of albuminous matter insoluble in alcohol, ether, 

 and water, and 5 of the aforesaid fats, and their compounds. 

 Denis found in the brain of a man aged 20 years : 

 Water .... 78-0 



Albumen . . . .7*3 



Phosphorized fat . " . . 12-4 



Extractive matter and salts . 1*4 



In the brain of a man aged 78 years he found : 

 Water . . . .76-0 



Albumen . . . .7*8 



Phosphorized fat . . .13-1 



Extractive matter and salts . . 2-5 



Vauquelin found in the human brain : 



Water .... 70-00 



Albumen . . . .7-00 



Fat .... 5-23 



Phosphorus . . . .1-50 



Extractive matter . . . 1-12 



Acids, bases, and sulphur . . 5 '15 



Lassaigne has made the following analyses of the brain of an 

 insane person : 



Cortical and medullary Cortical Medullary 

 substance together. substance, substance. 



Water .... 77'0 85-0 73-0 



Albumen . . . 9'6 7-5 9'9 



Colourless fat . . .7-2 1-0 13-9 



Red fat . . .3-1 3'7 0'9 



Extractive matter, lactic acids, salts . 2-0 1*4 I'O 

 Phosphates of lime, magnesia, and T 

 peroxide of iron . . J 



[The following table has been drawn up by I/Heretier 2 from 

 1 See Vol. I, p. 81. * Traite de Chim. pathol. p. 596. 



