POISONOUS METALS ON SPEAYED FRUITS AND VEGETABLES. 25 
Table 10. — Copper remaining on sprayed cucumbers at picking time. 
Sam- 
Spray material used. 
Date 
sprayed. 
Determinations 
made on. 
Coppe 
r(Cu). 
Loss on 
drying. 
ple 
No. 
Original 
fruit. 
Dried 
fruit. 
25660 » 
1916 
1916 
1916 
1916 
Whole fruit 
Parts per million. 
0.6 11.3 
.3 7.1 
.5 7.7 
1.2 25.5 
.3 7.3 
2.8 44.4 
1. 2 25. 5 
.3 7.3 
2.5 39.1 
1.4 28.6 
.3 6.8 
2. 5 38. 5 
Per cent. 
94.7 
2-4-50 B ordeaux 
Pulp 
95.8 
Skin 
93.5 
25661 i 
Whole fruit 
95.3 
2-4-50 Bordeaux plus 2 lbs. 
resin fish-oil soap. 
5-5-50 B ordeaux 
Pulp 
95.9 
Skin 
93.7 
256621 
Whole fruit 
95.3 
Pulp 
95.9 
Skin 
93.6 
25663' 
95.1 
Pulp 
95.6 
Skin 
93.5 
i Cucumbers picked Sept. 9, 1916, Plymouth, Ind. 
Table 11. — Arsenic, lead, and copper remaining on sprayed cranberries at picking time. 
Sam- 
Spray material used. 
Date 
sprayed. 
Condition 
of fruit 
analyzed. 
Arsenic 
(As). 
Lead (Pb). 
Copper 
(Cu). 
Loss 
ple 
No. 
Orig- 
inal 
fruit. 
Dried 
fruit. 
Orig- 
inal 
fruit. 
Dried 
fruit. 
Orig- 
inal 
fruit. 
Dried 
fruit. 
dry- 
ing. 
23453 » 
Sprayed lightly with 
4-4-50 Bordeaux, 2 
lbs. resin fish-oil 
soap. 2 
Sprayed medium with 
4-4-50 Bordeaux, 2 
1915. 
June 24, July 
26, Aug. 11, 
28. 
do 
Unwashed. 
Washed 3 ... 
Pa 
rts per 
mill iot 
i. 
7.4 
7.1 
3.9 
2.3 
7.6 
4.8 
33.3 
16.2 
2.0 
1.7 
2.0 
1.8 
2.6 
2.4 
.9 
7.2 
3.0 
62.7 
60.2 
33.9 
20.0 
66.1 
41.7 
268.5 
130.6 
15.0 
12.8 
14.4 
12.9 
17.9 
16.5 
7.1 
62.1 
25.9 
P.ct. 
88.2 
88.2 
234541 
Unwashed . 
Washed 3 ... 
88.5 
88.5 
23455 i 
lbs. resin fish-oil soap i 
(normal spray for re- [ 
gion). 2 ' j 
Sprayed heavily with do 
4-4-50 Bordeaux, 2 
Unwashed . 
Washed 3 ... 
88.5 
88.5 
23456 l 
lbs. resin fish-oil 
soap. 2 
Oversprayed with 4-4- 
50 Bordeaux, 2 lbs. 
resin fish- oil soap. 2 
June 10, July 
10, 31, Aug. 
16. 
JiThftl.9_.Tnlv 
Unwashed . 
87.6 
87.6 
23684 * 
Unwashed . 
86.7 
4-4-50 Bordeaux, 2 27 An?. 12. 
86.7 
23685 * 
lbs. resin fish-oil 
soap. 5 
do 
do 
Unwashed . 
Washed 3 . . . 
86.1 
4-4-50 Bordeaux, 2 
86.1 
lbs. resin fish-oil soap 
(normal spray for re- 
i gion). s 
23686 4 Spraved lightly with 
85.5 
4-4-Zft Bordeaux. 2 i 
Washed 3 ... 
85.5 
23687 < 
25727 * 
lbs. resin fish-oil 
soap. 5 
87.4 
1916. 
June 26, July 
27, Aug. 5, 
25. 
88.4 
with 3-3-50 Bordeaux, 
88.4 
2 lbs. resin fish-oil 
I soap. 6 
i Early Black. 
s Harvested Sept. 18, 1915, Brown Mills, N. J. 
1 Washed by holding the berries in running tap water. 
4 Howe. 
5 Harvested Oct. 16, 1915, Brown Mills, N. J. 
« Harvested Sept. 18, 1916, Brown Mills, N. J. 
* Washed by soaking berries in water for a short time, pouring off the water, adding more water, and 
repeating operation three times. 
72638—22 4 
