18 QUICK METHOD FOR DETERMINING MOISTURE IN GRAIN, 



a diameter of 1^ inches, thus forming a one-eighth inch asbestos pro- 

 iection (r) to lessen the danger of breaking the necks of the flasks in 

 placing or removing the covers. Each cover is provided with a 

 wooden handle (m) and a five-eighths inch flange (>i). the latter hav- 

 ing a small notch at o, directly opposite the notch (o') in the side of 

 the chamber. The asbestos in the notch {o') in the wall of the 

 chamber should project sufficiently to form a cushion to protect the 

 glass tube leading thru the notches o, o' to the condenser. 



THE CONDENSER. 



The condenser (figs. 3 and 5. .1) consists of a plain copper tank 4 

 inches wide. 1-2 inches high, and of the same length as the evaporating 



chamber {B). In the bottom of the 

 tank at points directly opposite the 

 center of each of the compartments 

 of the evaporating chamber are cut 

 1-inch holes for receiving the per- 

 forated rubber stoppers (e) thru 

 which the ends of the glass con- 

 denser tubes (s) project into the 

 measuring cylinders (/). Heavy 

 one-eighth inch washers {d) are 

 soldered around the holes in the 

 bottom of the tank, so that the rub- 

 ber stoppers (e) bearing the con- 

 denser tubes (s) can be prest in 

 firmly, thereby avoiding the possible 

 danger of any water leaking from 

 the tank into the measuring cylni- 

 ders. Thru the condenser tank 

 passes a stream of cold water, en- 

 tering thru the valve («) and pass- 

 ing out at the overfloAv pipe (e). Connected Avith the valve («) is a 

 three-eighths inch pipe (7j) . which extends the full length of the 

 tank. In this pipe, near each condenser tube, are two small holes 

 (jy). drilled at such an angle that the cold water entering the tank 

 will fall directly on the glass condenser tubes. In order to prevent 

 the sides of the tank from bulging, extra braces (/) should be put in 

 everv 10 or 18 inches. 



Fig. 8.— End view of apparatus fur moisture 

 determination. 



THE ST.\.ND SUPPORTING THE EVAPORATING CHAMBER AND CONDENSER. 



The stand (see figs. 3 and 5) supporting the condenser (.1) and 

 the evaporating chamber (B) is made of angle iron, with 1-inch 

 sides and three thirty-seconds inch thick. The total height of the 



09 



