To reduce the swelling it was iirmersed. in hot water. This 

 seemed to bring out the eruption very quickly and the "blisters 

 were treated with permanganate as fast as they appeared. The 

 swelling was reduced but returned during the night. On the 

 evening follcv/ing, the forearm was immersed in a bowl of hot 

 permanganate solution containing a little caustic potash. The 

 solution was kept as hot as could be borne for about half an 

 hour. After this bath, the poison was compltely oxidized^ 

 for the swelling v/as reduced and did not return, nor was there 

 any fresh ei'uption. TiTiiat appeared to be a severe case of 

 poisoning was thus cured very quickly. The use of hot water 

 not only reduce^ 'jhe swelling but also helps to destroy the 

 poison. The action of permanganateiis also more rapid at 

 high temperatures. 



The oxidizing power of permanganate, as is v/ell kno'ym, 

 is greater in acid solution than in alkaline, five atoms of 

 oxygen being available in the I'ormer and three in the latter 

 according to these equations: 



2KMn04f- 3H2S23D4s:i^204 ^ ^lin^O^fSK^O -f 50 



SKMnO^-f KgO = EljaOg-f 2KCii-f-S0 



Permanganate was used as a remedy in seme cases m.ixed 

 with dilute sulphuric acid, and in others, with zinc sulphate; 

 also with lime water. It was found to be satisfactory whether 

 used alone or v;ith any of the substances m.entioned, provided 

 it was well rubbed into the skin. The concentration of the 



•55- 



