POISONOUS METALS ON SPRAYED FRUITS AND VEGETABLES. 



19 



Table 5. — Arsenic and lead remaining on sprayed peaches at picking time — Continued, 



Spray material used. 



Date 

 sprayed. 



Determi- 

 nations 

 made on 



Arsenic(As). 



Lead (Pb). 



|5o'3 



o 



^ 2 



Sprayed lightly with 1 

 lb. lead arsenate 

 (powder), 50 galls, 

 water. 



8 lbs. sulphur, 8 lbs. 

 stonelime, SOgalls.wa- 

 ter (self-boiled lime- 

 sulphur), 1 lb. lead 

 arsenate (powder). 



Self-boiled lime-sulphur. 



Sprayed heavily with 1 

 lb. lead arsenate 

 (powder), 50 galls, 

 water. 



8 lbs. sulphur, 8 lbs. 

 Stone 1 ime,50galls .wa- 

 ter (self-boiled lime- 

 sulphur), 1 lb. lead 

 arsenate (powder). 



Self-boiled lime-sulphur. 



Commercially sprayed 

 with 1 lb. lead arse- 

 nate (powder), 50 

 galls, water. 



8 lbs. sulphur, 8 lbs. 

 stone lime,50galls.wa- 

 ter (self-boiled lime- 

 sulphur), 1 lb. lead 

 arsenate (powder). 



Self-boiled lime-sulphur. 



48 lbs. hydrated lime, 

 2 lbs. lead arsenate 

 (powder). 



2 lbs. lead arsenate 

 (powder), 32 lbs. hy- 

 drated lime, 16 lbs. 

 sulphur. 



16 lbs. sulphur, 34 lbs. 

 hydratedlime. 



46 lbs. hydrated lime, 

 4 lbs. lead arsenate 

 (powder). 



32 lbs. sulphur, 4 lbs. 

 lead arsenate (pow- 

 der), 14 lbs . hydrated 

 lime. 



32 lbs. sulphur, 18 lbs. 

 hydrated lime. 



44 lbs. hydrated lime, 

 6 lbs. lead arsenate 

 (powder). 



44 lbs. sulphur, 6 lbs. 

 lead arsenate (pow- 

 der). 



Sulphur, with 5 per 

 cent hydrated lime 

 added. 



1 lb. lead arsenate (pow- 

 der), 50 galls, water. 



50 galls, self-boiled lime- 

 sulphur, 1 lb. lead ar- 

 senate (powder). 



Self-boiled lime-sulphur. 



Check (unsprayed) 



1915. 

 May 93 



May 26 



July 10 

 May 93 



May 26 



July 10 

 Mav 93 



May 26 



July 10 

 Mav 93 



May 26 



July 10 



May 93 



May 26 



July 10 



May 9» 



May 26 



July 10 



May 93 



May 26 



July 10 



78 lbs. terra alba, 32 lbs. 

 sulphur. 



Do 



Do 



May 93 



May 26 

 July 10 



Whole * 

 Pulp... 



Skin 



Whole < 

 Pulp... 

 Skin. . . 



Whole ' 

 Pulp... 

 Skin... 



Whole < 

 Pulp. . . 



Skin..., 



Whole * 

 Pulp... 



Skin..., 



Whole *. 

 Pulp. . . . 

 Skin.... 



Whole < . 

 Pulp.... 



Skin.... 



0.16 

 .04 

 .60 



.30 



.06 



1.30 



Parts per million 



Whole *. 

 Pulp.... 

 Skin.... 

 Whole < . 

 Pulp . . . . 

 Skin . . . . 



.67 



.09 



2.50 



.30 



.10 



1.00 



1.20 



.30 



4.10 



1.90 



.40 



7.80 



1.50 



.30 



6.30 



.60 



.20 



2.30 



1.40 



.50 



4.60 



4.40 



.60 



15.40 



2.00 



.70 



6.10 



.30 

 .40 

 .14 

 .90 



0.30 



.10 



1.00 



.70 



.30 



2.50 



.60 



.20 



2.10 



.40 



.20 



1.40 



.70 



.40 



1.70 



1.40 



.20 



5.10 



1.20 



.20 



4.30 



2.2 



.7 



Mg . per 

 peach. 



4.0 



1.3 



13.7 



2.6 

 1.3 



4.8 

 2.7 

 11.2 



9.1 



1.3 



31.5 



7.9 



1.4 



26.1 



0.013 

 .003 

 .010 



4.4 I .021 



1.9 .003 



15. 1 . 018 



.019 

 .002 

 .017 



.008 

 .002 

 .006 



.014 

 .004 

 .010 



.040 

 .004 

 .036 



.018 

 .004 

 .014 



.001 

 .000 

 .001 

 .003 

 .001 

 .002 



0.025 

 .007 

 .018 



.049 

 .016 

 .033 



.050 

 .013 

 .037 



.045 

 .020 

 .025 



.083 

 .009 

 .074 



.070 

 .007 

 .063 



P.c:. 

 86.1 

 86.3 

 85.3 



84.0 

 84.2 

 83.4 



85.0 

 85.1 



84.7 



.035 84.5 

 .013 84.6 

 .022 84.0 



85.3 

 85.4 

 84.8 



84.6 

 84.8 

 83.8 



84.8 

 85.2 

 83.5 



84.4 

 84.8 

 82.9 

 85.1 

 85.8 

 83.4 



Gr. 

 84.1 



83.4 



65.8 



59.3 



58.7 



67.4 

 55.8 



' Delaware variety, harvested Aug. 12-18, Berlin, Md. 



' As shucks fell. < Without stones. 



6 Delaware variety, harvested Aug. 12-18, Springfield, W. Va. 



