ARSENICAL POISONING FROM SMELTER SMOKE. 
413 
Table Showing Quantity of Arsenic in Milk Produced by Deer Lodge Valley 
Cows. 
No. of 
Sample. 
Date, 1906. 
Miles from 
Smelter. 
No. of 
Cows. 
Parts AS2O3 
Per Million. 
Grains AS2O3 
to 100 Gallons. 
1 
Sept. 21 
4.5 NNE 
r» 
5 
2.94 
17.7 
2 
Nov. 3 
3 E 
1 
0.47 
2.83 
3 
Nov. 3 
6 NNE 
1 
0.70 
4.00 
4 
Nov. 3 
4.5 NNE 
2 
0.18 
1.08 
5 
June 28 
4.5 NNE 
1 
1.40 
8.42 
6 
June 27 
5 E 
1 
1.00 
6.02 
7 
July 2 
3 SE 
I 
4.20 
25.28 
8 
June 28 
3 N 
5 
3-40 
20.47 
9 
June 23 
3 W 
1 
5-70 
34-30 
In considering the results of these analyses, it should not be 
forgotten that the ration of many cows, and at least some of 
those from which this milk was obtained, contained bran and 
grain imported into the valley and arsenic-free. 
This table shows that the milk not only contained an appreci¬ 
able quantity of arsenic, but that in some instances it contained a 
remarkably large quantity. That is, in sample I, over one-sixth 
of a grain per gallon, in sample 8, one-fifth grain per gallon; in 
sample 7, one-fourth grain per gallon, and in sample 9, one-third 
grain per gallon. Should a person daily drink a pint of the milk 
from which sample 9 was taken, and ingest another pint with 
tea, coffee, custard or other food, he would be ingesting one- 
twelfth of a grain of arsenic per day. Should he in addition to 
this eat one-half pound of liver containing 30 parts per million 
of arsenic, as might easily occur in the Deer Lodge Valley, he 
would ingest an additional one-ninth of a grain, making in all 
nearly one-fifth of a grain per day. The reader can form his own- 
opinion of what would happen should this person be one of those 
sensitive individuals who is made ill by a dose of one-twentieth of 
a grain of arsenic per day. 
In the arsenical poisoning from beer which occurred in Eng¬ 
land, 3,245 cases of poisoning were discovered. The report says: 
“ The quantity of arsenic in the beer has been in exceptional cases 
