AND WINE MAKING. 



145 



used, and can be had in anyoptical establishment. They 

 are made of glass, platina, or silver, at prices ranging 

 from 13 to $10. 



Figure 15 shows must scale (silver) and test tube. With 

 the scale you should also have a long glass, or tin tube 

 made for tlie purpose of holding the must while testing it. 



An Acidimeter. — The one invented and patented by 

 Henry Twitchell is simple, and can be used%with accuracy 



Fig. W.— ACIDIMETER. 



by beginners. It is a timely invention, as it took long 

 practice to work correctly with either Otto's or Geissler's. 

 It is accompanied with full directions for its use. Fig- 

 ure IG gives an ilhistration of the Acidimeter. 

 10 



