Analysis. 
1G7 
valuable science, then, is ours, which, from materials so 
scant, can furnish results so important, with all the certainty 
of demonstration. Had the suspected matter been arsenic 
or corrosive sublimate, the result would have been equally 
certain, and perhaps a discovery been developed by collateral 
circumstances, which would have brought to punishment the 
author of the base deed ; or, as in this case, some unjustly 
suspected person been relieved from the foul suspicion of hav^ 
ing intended the death of a noble animal, by the clearness 
and distinctness with which chemical analysis had demon- 
strated the absence of all ground for suspicion. We offer these 
remarks to induce all those who may in any way be liable 
to be called upon to act as analysts, to qualify themselves for 
the duty, and to render themselves competent, by nicety and 
skill, to exhibit the components of the smallest specimens, 
with perfect accuracy. 
Baltimore, May 29th, 1835. 
ART. XXV. — MINUTES OF THE ANALYSIS OF BREAD, WHICH 
HAD CAUSED THE SEVERE ILLNESS OF FOUR PERSONS, AND 
DEATH OF TWO, IN FREDERICK COUNTY, Md. By P. T. Tyson 
and W. R. Fisher. 
A roll of bread (suspected to be poisonous,) was handed to 
us this day with a memorandum relating thereto, sent by Dr. 
Goldsborough, of Frederick. The results of the examination 
were as follows : 
First A few crumbs of the bread placed on ignited char- 
coal gave a slight odour of arsenic ; the accompanying em- 
pyreumatic smell proceeding from the combustion of the bread 
itself impaired the value of this experiment, but there was 
sufficient arsenical odour to create a suspicion of the presence 
of arsenic. 
Second. About one third of the roll was placed in an evapo- 
rating dish on a sand bath and treated with nitric acid in 
