22 BULLETIN 1027, U. S. DEPARTMENT OF AGRICULTURE. 
Table 5. — Arsenic and lead remaining on sprayed peaches at picking time — Continued 
Date 
Determi- 
Sam- 
ple Sprav material used. \ ^^"JIZa I nations "d 
No. 5prayecL : made on 
Arsenica As). 
Lead(Pb). 
- 
■d 
3 
"5 
.1 = 
r 
■r. 

- 
z" 
-~ 
< 
279359 
.-- - 
2793*3 
1 lb. lead arsenate 
i powder | , 2i lbs. lime. 
50 galls, water. 
8 lbs. sulphur, 5 lbs. 
hydrated lime, 3 o^s. 
glue, 1 lb. lead arse- 
nate 'powder!, 50 
galls, water. 
S lbs. sulphur, S lbs. 
hydrated lime, 3 ozs. 
glue, 50 galls, water. 
Check | unsprayed I 
10 lbs. lead arsenate 
(powder), 00 lbs. hy- 
drated lime. 
Ture sulphur 
Commercial preparation 
containing 50 per cent 
sulphur and 50 per 
cent lead arsenate. 
1917. 
Apr. 4 
Apr. 19 
June 7 
Apr. 4 
Apr. 19 
June 7 
Apr. 4 
Apr. 19 
June 7 
Whole * . 
Pulp.... 
Skin 
Whole * 
Pulp... 
Skin . . . 
Whole * 
Pulp... 
Skin... 
Whole * 
Pulp... 
Skin.-- 
0.05 
.01 
.20 
.0 
.0 
.0 
.02 
.01 
.04 
.07 
.0 
.40 
Mg. 
per 
arts per mi 
ptach. 
0.0O4 0.095 
P.ct. 
0.30 
1.00 
6.9 
85-5 
.10 
.40 
3.0 
.001 
.032 
86.6 
1.20 
4.20 
25. S 
.003 
.063 
S3. 7 
.0 
.60 
4.0 
.0 
.057 
85.0 
.0 
.40 
.0 
.032 
vV- 
.0 
1.70 
9.8 
.0 
.025 
32.6 
.10 
.90 
6.3 
.002 
.0S6 
85.6 
.10 
.60 
4.3 
.001 
.048 
86.0 
.20 
2.40 
14.0 
.001 
.038 
82.8 
.50 
1.20 
5.0 
.006 
.110 
85.0 
.0 
.so 
5.6 
.0 
.062 
85.6 
2.30 
3. 30 
19.2 
.006 
.048 
82.6 
Gr. 
95.0 
95.4 
96.2 
91.5 
V 
* Without stones. } Harvested July 9, Fort Valley, Ga. 
Table 6. — Arsenic, lead, and copper remaining on sprayed cherries at picking Hint 
Sam- 
Spray material used. 
Date 
sprayed. 
Arsenic 
(As). 
Condition 
of fruit 
analyzed. 
Orig- 
inal 
fruit. 
Dried 
fruit. 
Lead (Pb). 
fruit. frmt - 
Copper 
(Cu). 
Loss 
on 
dry- 
Dried ing. 
Orig- 
inal 
fruit. 
fruit. 
254521 
:.:4-:-: - 
254541 
::- 
25484* 
25485* 
I:,-' • 
Check (unsprayed) 
Home-made Bordeaux. 
Commercial fungicide 
containing 12 per 
cent copper, 3 per 
cent arsenic. 
3-4-50 Bordeaux, 2 lbs. 
lead arsenate ("paste). 
3-4-50 Bordeaux 
Check (unsprayed) 
1£ galls. lime^sulphur 
solution, 2 lbs. lead 
arsenate (paste), 50 
galls, water. 
1£ galls, lime-sulphur 
solution, 50 galls, 
water. 
Check (unsprayed) 
H galls, lime-sulphur, 
"2 lbs. lead arsenate 
(paste), 50 galls, wa- 
ter. 
3-4-50 Bordeaux, 2 lbs. 
lead arsenate (paste). 
May 30. June 
21. 
July 3. 
Uzwss'-ed 
Washed * . . 
Cnwashed 
Washed*.. 
Unwashed . 
Washed 2 ... 
May 30, June 
21. 
July 3. 
Cnwashed . 
Washed*... 
May 29-30. 
June 20. 
May 29-30, 
June 20. 
Cnwashed . 
Washed*... 
Cnwashed . 
Washed*... 
0.02 
.04 
.02 
.09 
.07 
.15 
:: 
.:-: 
.:-: 
is 
.17 
Part* per million. 
0.16 
.2 
.1 
.7 
.5 
.6 
1.0 
1.0 
2.3 
1.1 
: : 
.7 
.7 
I : 
L3 
5.4 
3.2 
2.8 
2.8 
1.9 
5.3 
8.1 
8.1 
4.6 
3.3 
; : 
1.8 
1.4 
:.: 
2.3 
1.6 
4.0 
11.9 
7.9 
15.0 
9.0 
P.ct. 
87.5 
82.3 
14.4 77.5 
8.1 ! 
6.5 7v5 
n i 
8.3 
15.2 
10.6 
86.7 
83.9 
84. 9 
i Picked July 12, 1916, Wenatchee, Wash. 
* Washed by holding under running tap water for a feT minute*. 
» Sweet cherries, picked July 20, 1916, Hart, Mich. 
* Sour cherries, picked July 20, 1916, Hart, Mich. 
