56 



INSECTICIDE STUDIES. 



DE <, RAFF'S CAKPKT un; DKSTUOYKH 

 itinii of 1'i-ofixxor I >< f//v/7/''x <''tr/t<f />'"</ 



Constituents. 



Sample Sample 

 No. 122. No. 129. 



l'i r i -i nt. I 1 ' / i -i /it. 



Moisture... '.->. Ml 



These two analyses aiv o-iven in two different reports of the Muni- 

 ch usetts State Experiment Station, but were very likely made upon 

 the same samples, since they are identical. 



The active poisonous principle of this solution is evidently mercuric 

 chlorid, which is often used for the destruction of various insects 

 which infest houses. 



