388 CHEMISTRY. 



PERFUME ETHERS; FRUIT ESSENCES. 



phuric acid upon alcohol that ether is generally obtained. 

 The process is represented in Fig. 117. Equal quantities by 



Fig. 117. 



weight of alcohol and the acid are introduced into a retort, 

 A, to which heat is applied by a ring-burner, or, better, by 

 means of a sand-bath. The retort is connected with an ap- 

 paratus for condensing the vapor of the ether, known as 

 Liebig's Condenser, and consisting essentially of two glass 

 tubes, C and D, one fitted into the other by means of corks ; 

 water entering the space between these tubes through the 



