18 
BULLETIN 1027, U. S. DEPARTMENT OF AGRICULTURE. 
The whole and pulp of apples were fumed in 7-inch casseroles and the 
skins were fumed in 5-inch casseroles, all being transferred to 4-inch 
casseroles before final fuming. Casseroles were covered until final 
fuming. 
RESULTS OF EXPERIMENTAL WORK. 
The results of the chemical analyses appear in Tables 5 to 15, 
inclusive. 
Table 5. — Arsenic and lead remaining on sprayed peaches at picking time. 
* 
Arsenic(As). 
Lead(Pb). 
ti 
I- 
Sam- 
ple 
No. 
e 
ed. 
Determi- 
nations 
made on . 

'3 
X3 
05 
u 
a 

1 
t£ 
Spray material used. 1 
Dat 
spray 
"3 
.3. a 
-a 
"3 
"Eos 
S £1 
't 2 
o*" 
Q"~ 
O 
1 " 
< 
•J 
^ 
> 
Mg. per 
peach. 
191^ 
Parts per million. 
P.ct. 
Gr. 
23196 2 
48 lbs . hydrated lime, 2 
May 
'93 
Whole*. 
0.13 
0.90 
0.40 
2.7 
0.014 
0.042 
85.3 
105.3 
lbs. lead arsenate 
Pulp.... 
.06 
.40 
.20 
1.4 
.005 
.016 
85.8 
(powder). 
Skin 
.42 
2.60 
1.20 
7.3 
.009 
.026 
83.6 
2 lbs. lead arsenate(pow- 
May 
26 
der), 32 lbs. hydrated 
lime, 16 lbs. sulphur. 
16 lbs. sulphur, 34 lbs. 
July 
10 
hydrated lime. 
23197 2 
46 ibs. hydrated lime, 
May 
93 
Whole * . 
.18 
1.30 
.40 
2.8 
.018 
-.040 
85.7 
100.5 
4 lbs. lead arsenate 
Pulp.... 
.08 
.60 
.10 
. 7 
.006 
.008 
86.0 
(powder). 
Skin 
.61 
4.00 
1.60 
10.4 
.012 
.032 
84.6 
32 lbs. sulphur, 4 lbs. 
May 
26 
lead arsenate (powder). 
14 lbs. hydrated lime. 
32 lbs. sulphur, 18 lbs. 
July 
10 
hydrated lime. 
44 lbs. hydrated lime, 
23198 2 
May 
93 
Whole 4. 
.25 
1.80 
.80 
5.7 
.024 
.076 
85.9 
95.2 
6 lbs. lead arsenate 
Pulp.... 
.08 
.60 
.20 
1.4 
.006 
.015 
86.1 
(powder). 
Skin 
.90 
6.10 
3.00 
20.4 
.018 
.061 
85.3 
44 lbs. sulphur, 6 lbs. 
May 
26 
lead arsenate (powder). 
Sulphur alone 
July 
10 
23199 2 
lib. lead arsenate (pow- 
May 
93 
Whole *. 
.20 
1.50 
.30 
2.2 
.020 
.029 
86.2 
98.0 
der), 50 galls, water. 
50 galls, self-boiled lime- 
Pulp.... 
.08 
.60 
.10 
.8 
.007 
.008 
86.7 
May 
26 
Skin.... 
.66 
4.20 
1.10 
7.0 
.013 
.021 
84.2 
sulphur, 1 lb. lead ar- 
senate (powder). 
Self-boiled lime-sulphur. 
July 
10 
23200 2 
Check (unsprayed) 
Whole «. 
Pulp.... 
.12 
.07 
.90 
.50 
.0 
.0 
.0 
.0 
.010 
.005 
.0 
.0 
86.7 
87.0 
83.6 
Skin.... 
.29 
2.00 
.0 
.0 
.005 
.0 
85.3 
23201 2 
78 lbs. terra alba, 32 lbs. 
May 
93 
Whole 4 . 
.13 
1.00 
.0 
.0 
.012 
.0 
86.5 
92.2 
sulphur. 
Pulp.... 
.02 
.20 
.0 
.0 
.001 
.0 
87.0 
May 
July 
May 
26 
10 
9a 
Skin 
Whole « . 
.63 
.10 
4.00 
.80 
.0 
.0 
.0 
.0 
.011 
.009 
.0 
.0 
84.3 
86.7 
Do."!].'.".'*"."!.'*!".!! 
232022 
78 lbs. hydrated lime, 
88.4 
32 lbs. sulphur. 
Pulp.... 
.09 
.70 
.0 
.0 
.006 
.0 
87.1 
Do 
May 
26 
Skin 
.14 
.90 
.0 
.0 
.003 
.0 
85.0 
Do 
July 
10 
232032 
10 lbs. lead arsenate 
May 
93 
Whole 4 - 
.13 
.90 
.30 
2.1 
.013 
.030 
85.4 
101.8 
(powder), 90 lbs. hy- 
Pulp.... 
.08 
.60 
.20 
1.4 
.007 
.017 
85.8 
drated lime. 
Skin 
.35 
2.10 
.70 
4.4 
.006 
.013 
84.2 
Do 
May 
26 
232042 
8 lbs. sulphur, 3 ozs. glue 
May 
93 
Whole 4 . 
.10 
.70 
.30 
2.0 
.009 
.025 
85.1 
86.0 
(used in water to wet 
Pulp.... 
.04 
.30 
.10 
.7 
.003 
.007 
85.4 
sulphur), 8 lbs. hy- 
Skin 
.34 
2.10 
1.00 
6.3 
.006 
.018 
84.1 
drated lime, 1 lb. lead 
arsenate (powder), 50 
galls, water. 
Do 
May 
26 
8 lbs.sulphur,3ozs. glue 
July 
10 
(used in water to wet 
sulphur), 8 lbs. hy- 
drated 1 ime, 50 gall's. 
water. 
< 
> 
" 
1 Where no mention is made of water in the formula the material was applied as dust. 
» Delaware variety, harvested Au». 12-18, Berlin, Md. 
» As shucks fell. 4 Without stones. 
