152 Chittenden and Smith—Absorption of Arsenic by the Brain. 
The trace of arsenic in both the muscle tissue of the stomach and 
in the brain was very small; the entire brain could not have con- 
tained more than 0:2 of a milligram of arsenic. 
These results plainly substantiate the views set forth above and 
lend favor to the belief that Scolosuboff’s results with sodium arsen- 
ite are applicable only to that form of poison, and not to the more 
insoluble compounds of arsenic. These two cases, therefore, are 
additional evidence that in poisoning with arsenic the presence of an 
appreciable amount of poison in the brain, is an indication amount- 
ing almost to proof positive of the administration of a soluble and 
diffusible form of arsenic. 
