HOT SPRINGS, ARKANSAS. 



21 



The apparatus used by the author (Fig. II) consisted of a round- 

 bottomed flask with a constricted neck joined to an upright bulbed 

 condenser by means of a glass tube slightly sloping toward the flask 

 instead of being bent at right angles. The flask was heated by being 

 immersed in a paraffin bath, and the distillate was received in a small 

 flask joined to the condenser by means of a grooved cork. The method 

 was as follows: 



An aliquot portion of the above filtrate evaporated to dryness, was 

 sliohtlv acidified with acetic acid and transferred to the round-bottomed 



Fig. 2. 



flask, 10 c. c. of methj'l alcohol was added, the flask lowered in the par- 

 affin bath, and distilled to dryness at a temperature of 130° C. to 140° C. , 

 collecting the distillate in the flask attached to the condenser with a 

 grooved stopper. The paraffin bath was lowered, the flask allowed to 

 cool, and 10 c. c. more of methyl alcohol added. This was then dis- 

 tilled over and the same process repeated six times, except that after the 

 fourth time a couple of drops of acetic acid were added. A large plati- 

 num crucible now received about 1 gram of quicklime and was blasted 

 until it ceased to lose weight. The constant weight was recorded and 

 the distillate transferred to the crucible. The alcoholic solution of 



