112 THE HUMAN BODY. 



and sometimes a thin layer of protoplasm forms a lin-. 

 ing to the cell-wall. The oily matter consists of a mixture 

 of palmatin, olein and stearin, which are compounds of 

 palmitic, stearic and oleic acids with glycerine, three 

 molecules of the acid being combined with one of glycerine, 

 with the elimination of water; as for example: 



CsIL ) 



CaHi 



Stearic acid. Glycerine. Stearin. Water. 



