POISONOUS METALS ON SPEAYED FRUITS AND VEGETABLES. 



21 



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



Spray material used. 



Date 

 sprayed. 



Determi- 

 nations 

 made on. 



Arsenic(As). 



o 



Lead (Pb). 



12 lbs. lead arsenate 

 (powder), 88 lbs. hy- 

 drated lime. 



12 lbs. lead arsenate 

 (powder), 88 lbs. sul- 

 phur (200-mesh fine). 



100 lbs. sulphur (200- 

 mesh fine). 



2 lbs. lead arsenate 

 (com. paste), 2 lbs. 

 Stone lime, 50 galls, 

 water. 



2 lbs. lead arsenate 

 (com. paste), self- 

 boiled lime-sulphur 

 (8-8-50). 



Self-boiled lime-sulphur 

 (8-8-50). 



68 lbs. terra alba, 

 32 lbs. sulphur (200- 

 mesh fine). 



Do 



Do 



68 lbs. hydrated lime, 

 32 lbs. sulphur (200- 

 mesh fine). 



10 lbs. leacj arsenate 

 (powder), 90 lbs. hy- 

 drated lime. 



Do 



Check plat (unsprayed) 



25637 ' Check plat ( unsprayed ) 



Self-boiled lime-sulphur 

 (8-8-50), 2 lbs. lead 

 arsenate. 



2 lbs. lead arsenate, 50 

 galls, water. 



5 lbs. "soluble sulphur 

 compd.," 3 lbs. lime, 

 50 galls, water, 2 lbs. 

 lead arsenate. 



i lbs. "soluble sulphur 

 compd.," 4 lbs. lime, 

 50 galls, water. 



Check plat (unsprayed) . 



1 lb. lead arsenate 

 (powder), 2 lbs. stone 

 lime, 50 galls, water. 



1 lb. lead arsenate 

 (powder), self-boiled 

 hme-sulphur (8-8-50). 



Self-boiled lime-sulphur 

 (8-8-50). • 



1915. 

 May 30 



June 19 



July 29 

 May 30 



July 29 

 May 30 



June 19 

 July 29 

 May 30 



June 19 

 July 29 

 May 30 



June 19 



About 

 May 13 



...do.. 



3 weeks 

 later 



About 

 July 15 



May 29- 

 May 30 



June 20- 

 June 21 



Aug. 1- 

 Aug. 2 



Whole * 

 Pulp... 

 Skin . . . 



Whole ■ 

 Pulp... 

 Skin . . 



Whole < 

 Pulp... 

 Skin . . . 



Whole 4 

 Pulp... 

 Skin . . . 



Whole < 

 Pulp... 

 Skin . . . 



Whole 1 

 Pulp... 



Skin . . . 



Whole < 

 Pulp . . . 

 Skin . . . 

 Whole < 

 Pulp... 

 Skin... 

 Whole < 

 Pulp... 

 Skin . . . 



Whole < 

 Pulp... 

 Skin . . . 

 Whole < 

 Pulp . . . 

 Skin . . . 



Parts per million. 



0.80 



7.10 



2.60 



.07 



.60 



.20 



3.50 



27.80 



11.60 



^ 







.42 



4.00 



1.10 



.10 



1.00 



.20 



1.50 



12.50 



4.10 



.20 



1.80 



.34 



.10 



.90 



.10 



.60 



4.90 



1.20 



.24 



2.30 



.60 



.07 



.70 



.20 



1.10 



8.70 



2.50 



.94 



8.00 



2.40 



.14 



1.20 



.20 



4.50 



35.40 



12.20 



.23 



2.00 



.40 



.10 



.90 



.14 



.77 



6.10 



1.50 



.04 



.30 



.40 



.01 



.10 



.30 



.20 



1.20 



.90 



.05 



.30 



.50 



.01 



.10 



.40 



.20 



1.10 



.90 



.05 



.30 



.50 



.01 



.10 



.30 



.20 



1.20 



1.30 



.06 



.40 



.40 



.03 



.20 



.30 



.20 



1.20 



.90 



.08 



.70 



.40 



.03 



.30 



.30 



.30 



2.20 



.90 



23.0 



1.8 



92.1 



10.4 



2.0 



34.2 



3.0 



.9 

 9.8 



1.9 

 19.7 



20.5 



1.7 



96.1 



3.4 



1.2 



11.9 



2.7 

 2.2 

 5.3 

 3.4 

 2.9 

 5.2 

 3.5 

 2.1 

 7.7 



2.7 

 2.2 

 5.6 

 3.7 

 2.9 

 6.6 



Mg. per 

 peach . 



0.091 



0.297 



.006 



.013 



.085 



.284 



. 044 



.115 



.008 



.016 



.036 



.099 



.020 



.034 



.008 



.010 



.012 



.024 



.026 



.065 



.006 



.020 



.020 



.045 



.115 



.295 



.014 



.020 



.101 



.275 



.026 



.046 



.009 



.013 



.017 



.033 



.005 



.0.52 



.001 



.031 



.004 



.021 



.005 



.045 



.001 



.028 



.004 



.017 



.005 



.051 



.001 



.025 



.004 



.026 



.005 



.034 



.002 



.021 



.003 



.013 



.008 



.042 



.002 



.025 



.006 



.017 



P.ct. 



88.7 

 89.0 



87.4 



89.4 

 89.8 

 88.0 



88.8 

 89.1 



87.8 



89.4 

 89.8 

 87.3 



88.3 

 88.5 

 87.3 



88.3 

 88.5 

 87.4 



85.1 

 86.4 

 83.0 

 85.4 

 86.2 

 82.6 

 85.7 

 85.9 

 83.1 



85.3 

 86.4 

 83.9 

 89.1 

 89.5 

 86.3 



Gr. 

 114.3 



104.7 



100.5 



107.5 



122. 



129.4 



90.9 



102.3 



85.5 



105.6 



> As shucks fell. 



* Without stones. 



« Elberta variety, harvested Sept. 13, Benton Harbor, Mich. 



' Elberta variety, harvested Aug. 21, Springfield, W. Va. 



» Elberta variety, harvested Sept. 16,"Benton Harbor, Mich. 



