mercuric chloride to the red filtrate, a bro-/m flocculent 

 precipitate was formed. It was filtered off and distilled 

 with caustic soda but the distillate did notcontain pyridine* 



1 



POTASSIUK PERI.IMGMATE A3 A EEMEDY iK)R EKUS POISOHIIG , 



In the early stages of this v/ork some experiments virere 



made to see if potassium penr.anganate could he used, to purify 



the lead precipitate hy oxidizing the tar "brought down in 



precipitation. It was found that the permanganate attacked 



the lead precipitate as well as the other organic matter in 



the vessel. This fact and the well knovm value of permanganate 



in treating akin diseases, its use as an antidote for some 



2 

 kinds of alkaloid poisoning , as an antidote given to cattle 



z a 



poisoned by plants, and as an antidote for snake bites, sug- 



5 

 gested its use as a remedy for Rhus poisoning. Maisch men- 

 tioned that he had used it with success, but it nevei* came 

 into general use, probably on account of its staining the skin 

 and clothing. In carrying out this work abundant opportunities 

 for testing its value as a remedy for the dermatitis caused 



1. This section is added in the hope that it may be of use to 



others who are subject to this forrr. of poisoning. 



2. Lloor, 1. Y. Lied. Rec. 45 (1894), 20C. 



3. Bull. llo. 26, U. S, Dpt. Agr. , I)iv. of Bot. 47. 



4. Lacerda, Comptes rendus 93 (1881), 465-469, 



5. Amer. Jour. Ked. oci. 52, (1866), 285. 



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