166 PROCEEDINGS OP THE AMERICAN ACADEMY 



used up, the crude borneol is precipitated by water, washed till free 

 from alkali, dried by pressure between cloth or filter-paper, and puri- 

 fied by crystallization from ligioine. 



Finally, I would add that sodium amalgam reduces an alcoholic 

 solution of camphor, although the action is so slow that it is of no 

 value as a practical method, the melting-point being raised only to 

 183' by action during two weeks, part of the time on the water-bath. 

 The fact however deserves mention, because in Beilsteiu's Handbuch, 

 p. 17G3, it is stated that sodium amalgam does not act on camphor. 



