32 



JOURNAL OF THE 



As a remedy to prevent this loss of moisture and consequent disar- 

 rangement of two sets of determinations, the use of tightly fitting 

 rubber stoppers is recommended — even then a loss is liable to occur 

 from the frequency of the weighings and exposure to air. The neces- 

 sity of fitting in the rubber stopper tightly after each weighing will 

 be observed. H. B. BATTLE. 



Laboratory N. C. Ag. Exp. Station. 



AN IMPROVED WASH-BOTTLE FOR CHEMICAL 



LABORATORIES. 



H. B. BATTLE. 



By this simple device the washing of precipitates and the cleans- 

 ing of vessels used in the process of analysis, which before required 



