TABLES FOR REFERENCE. 



26l 



sinks in a 10$ salt solution, 

 tenth of this interval. 



One degree of the scale is one 



A solution of a given percentage strength is prepared by- 

 adding to a number of parts of the substance to be dissolved 

 equal to the required percentage, a sufficient quantity of the 

 solvent to make 100 parts in all. Thus, a 10$ salt solution 

 consists of 10 parts of salt in 90 parts of water. 



For practical purposes, one cubic centimeter of water or 

 alcohol may be considered as one gram. 



The figures in the following tables refer to parts by volume 

 at about 60 F. Intermediate values may be obtained from 

 those given above with sufficient accuracy by interpolation. 



