of this manusoript) . The lead precipitate so obtained was 

 extracted with ether in Soxhlet extractors and after the extrac- 

 tion was foixnd "by test to be free from poison. Therefore 

 the poison, if precipitated by the lead acetate, must hare 

 been extracted by the ether. This ether solution had a 

 dark greeA-color, ana was acid from acetic %cid brought down 

 in the lead precipitate. The ether was evaporated in a 

 vacuum desiccator without heat and there remained a small 

 quantity of an acid mixture of water and a soft tarj the 

 watery part was colored green showing that the tar was solu- 

 ble to some extent in dilute acetic acid. The mixture had 

 the peculiar odor of the original material, A small drop of 

 the green watery part v/as applied to the wrist, allo7;ed to 

 remain a few minutes and was then removed by absorbent paper 

 but the spot was not washed. Itching and reddening of the 

 skin commenced within twenty- four hours. At the end of 

 forty-eight hours, there was a well developed case of poison- 

 ing. How this was cured will be described in another place, 



A small portion of the poisonous mixture was dissolved 

 in alcohol, and this solution was divided into three parts. 

 The first part was treated with ferric chloride but it gave 

 no colorreaction. Another portion tf the alcoholic solution 

 was diluted v/ith water. It became turbid. The third portion 

 gave a dirty-green precipitate with lead acetate, which seemed 

 to come down more readily when the solution was diluted with 



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