THE PRESENCE OF ARSENIC IN HOPS. 
Table II. — Arsenic in kiln-dried hops and in sulphur used in curing certain lots of hops 
grown in Oregon in 1915. 
No. 
Source of sample. 
. Arsenic as 
As 2 3 (parts 
per 
million) . 
No. 
Source of sample. 
Arsenic as 
As 2 3 (parts 
per 
million). 
Place. 
Yard, etc. 
In 
the 
hops. 
In 
the 
sul- 
phur. 
Place. 
Yard, etc. 
In 
the 
hops. 
In 
the 
sul- 
phur. 
195 
Independence, 
.do .:. 
Yard G 
0.4 
/ 6.6 
\ 7.1 
5.2 
3.8 
1.0 
6.1 
f 1.3 
1 1.2 
{1:1 
1.9 
20 
20 
"iie" 
356 
""26" 
208 
205 
210 
206 
209 
211 
212 
214 
216 
218 
223 
225 
Brooks 
Springfield 
do 
Harrisburg 
do 
do 
Aurora 
Donald 
do 
St. Paul 
YardB 
0.5 
4.2 
4.1 
2.6 
4.5 
26.0 
3.4 
2.7 
3.4 
3.8 
3.9 
4.2 
4.4 
229 
Yard GVdupli- . 
Yard G/cates. . . 
YardH 
YardK 
Yard L 
Yard A 
?33 
do.... 
do.... 
do.... 
do.... 
do.... 
do.... 
do.... 
do 
do.... 
do.... 
.....do.... 
YardB 
198 
Yard A 
ISO 
207 
YardB 
YardC 
224 
228 
Yard H 
Yard N\ dupli- 
Yard Nj cates.. 
Yard 01 dupli- 
Yard 0/ cates . . 
Yard P\ dupli- 
Yard Pj cates . . 
Yard A . 
Yard A*."."!!!!.".' 
115 
90 
232 
YardB 
123 
230 
234 
116 
76 
231 
188 
235 
'204 
3.93 
Analyses of all the samples of sulphur collected are given In Table 
III. With a few exceptions these samples were taken from the hop 
yards and are representative of the sulphur used in curing the crop 
of 1915. Three samples of sulphur used in curing the crop of 1914 and 
two commercial samples also are included. 
The quantity of sulphur on hand at the hop kilns varied from a 
few hundred pounds to several tons. As a rule, the individual lots 
were far from uniform in appearance, and in many cases several 
•different kinds of sulphur seemed to be present. Some pieces were of a 
bright lemon-yellow color and others of various shades of orange. Some 
pieces were hard and glasslike; others appeared more crystalline and 
crumbled readily, while some pieces were porous, resembling pumice 
in appearance. In most of the lots the sulphur consisted of pieces 
of different sizes, from lumps 6 or 8 inches across down to a fine 
powder. This made sampling difficult, but the agreement between 
the values obtained for samples 181 and 200, which were taken to 
represent the sulphur in one lot, indicates that the samples were rep- 
resentative of the various lots at the time of sampling. 
Table III.—. 
Arsenic in sulpl 
mr used for cu 
"ing hops grown in Oregon in 1915. 
No. 
Source 
sample. 
Arsenic 
as AS2O3 
(parts per 
million). 
No. 
Source of sample. 
Arsenic 
as As 2 3 
Place. 
Yard, etc. 
Place. 
Yard, etc. 
(parts per 
million). 
18? 
Independence... 
do 
Yard B 
64 
197 
170 
116 
66 
f 356 
\ 329 
35 
20 
141 
213 
215 
217 
219 
220 
222 
226 
190 
227 
115 
191 
Yard F (1915)... 
Yard F (1914)... 
Yard H 
Yard A 
90 
192 
do 
do 
do 
.. . do 
Yard B 
123 
197 
St. Paul 
116 
179 
YardK (1915)... 
Yard K] 
( 1914)1 du pi i- 
Yard K| cates. 
(1914)1 
YardM 
Yard B 
4.4 
181 
do 
76 
Banks 
188 
?00 
Independence. . . 
Portland 
Commercial 
sample 
Dealer's sample. 
??1 
do 
3.6 
7.1 
193 
do 
Yard 
189 
do 
YardR 
116.7 
