A SIMPLE METHOD OF DILUTING ALCOHOL TO 

 ANY DESIRED PER CENT. 



OF alcohol of known per cent take the number of c.c. repre- 

 sented by the figures in the required per cent, add enough 

 water to bring the whole up to the number of c.c. represented 

 by the figures in the known per cent. The mixture will be of 

 the required per cent. To illustrate: 



To make 50/0 alcohol from 95^0 alcohol, add to 50 c.c. 

 of 95^) alcohol enough water to make 95 c.c. The result 

 will be 95 c.c. of 50/0 alcohol. 



To make 40/0 alcohol from 70/0 alcohol, add to 40 c.c. 

 of 70^0 alcohol enough water to make 70 c.c. The result 

 will be 70 c.c. of 40^0 alcohol. 



If one of these illustrations is firmly fixed in the mind, one 

 can, working by analogy, make up very quickly alcohol of any 

 desired per cent without laborious calculation or reference to 

 tables. Larger or smaller quantities than those indicated in 

 the illustrations can be made by using different units of meas- 

 urement or by multiplying or dividing those quantities by the 

 proper number. 



WM. A. REDENBAUGH. 



DARTMOUTH COLLEGE, 



HANOVER, N. H. 



