ELISHA MITCHELL SCIEXTIFIC SOCIETY. 91 



It was noticed that the chang'e beg"an [to take place 

 as before, at about 70° C, b}^ the brownish deposit 

 at the bottom and sides of the flask, as the flask was this 

 time immersed in hot water, taking- care that the 

 mixture should not come to boilmg-. 



The g-reater portion collected on the bottom as a dark 

 brown semi-syrup at that temperature, and the super- 

 natant liquid was straw colored. 



The chang-e w^as complete on heating" for 30 minutes 

 just below the boiling- point of the mixture. The liquid 

 in the flask now had a strong- smell of eth\d iodide, and 

 reduced Fehling-'s solution. 



About half was poured into a smaller flask provided 

 with a reflux condenser and g-ently boiled in a water 

 bath for three hours. At the end of this time the 

 smell of the ethyl iodide did not seem to have dimin- 

 ished, and it still reduced Fehling-'s solution. 



It was then evaporated on a water bath to a syrupy 

 consistency, and the S3^rup extracted with a mixture of 

 equal parts alcohol and ether, benzen, petroleum ether 

 and acetic ether. No crystal of sodium iodide could be 

 obtained, and only a thick syrup which powerfully re- 

 duced Fehling-'s solution. 



The other portion of the liquid was then transferred 

 to a distilling- flask and fractioned. A few c. c. came 

 over between 74° and 78° C. and was mainly C2H5OH. 

 Most of the alcohol comes over between 78° and 82° C, 

 leaving- a dark brown syrup behind in the flask. The 

 dark brow^n substance obtained as a deposit in the ope- 

 ration was set aside for examination. Meanwhile an- 

 other experiment was started, varying- the conditions 

 somewhat. 



Fifteen g-rams of anhvdrous g-lucose was dissolved 

 in 400 c. c. boiling absolute alcohol. The solution 



