SYfeTEM NAPHTHA LENE-CHL0E013ENZENE-PHEK OL, ETC. 13 



D. The Fndon Surface of Naphthalene. 



The arraugemeiit employed is shown in Fig. 6. B is a 

 gkss tube (17 cm. in height, 4 cm. in diameter), within which 



Fig. 6. 



a smaller tube A (height 13 cm., diameter 3 cm.) is placed. The 

 larger tube is fastened to the wooden cover of the bath. The 

 smaller tube has a hollow glass stoj^per, the inside of which is 

 filled with a cork. The latter is provided with four holes, two 

 of which serve to admit the stirring rods, the third for the 



