SPECIFIC GEAYITY. 



487 



SPECIFIC GRAVITY EQmVALEXTS OF THE BRIX AXD BEAUME SCALES. 



Of course the reader will understand that the hydrometer, with 

 either of the above scales, does not indicate necessarily the presence 

 of sugar in a solution, but simply the relative Aveight of a certain 

 volume of any liquid, as compared Avith the weight of the same volume 

 of water. But, as will be seen by the preceding tables, in which the 

 analyses of a very large number of sorghum and maize juices are given, 

 together with the specific gravities, it is establislied as true, beyond 

 question, that the specific gravity of any freshly expresed juice of 

 either sorghum or maize, will enable one to tell its composition within 

 very narrow limits. It is to be remembered, however,- that this is only 

 true of the freshly expressed j uice. From cane, which has suffered in de- 

 terioration, either from having been cut a longtime before pressing or 



