ALCOHOLOMETRY 



constructed of glass, and is in the shape of a common hydrometer, the stem being 

 divided into degrees ; it carries a small spirit thermometer in the bulb, to which a 

 scale is fixed, ranging from 30 to 82 F. (0 to 12 0.) There are Tables supplied 

 with the hydrometer, which are headed by the degrees and half degrees of the ther- 

 mometric scale ; and the corresponding content of spirit, over or under proof at the 

 respective degree of the Table, is placed opposite each degree of the hydrometer. 



By means of either of these instruments, and by the use of the Tables accompany- 

 ing them, we learn the strength, in degrees, above or below proof ; and the following 

 Table by Dr. Ure will be found most useful in converting these numbers into specific 

 gravities : 



