POISONOUS METALS ON SPRAYED FRUITS AND VEGETABLES. 25 

 Table 10. — Copper remaining on sprayed cucumbers at picking time. 



Sam- 

 ple 

 No. 



Spray material used. 



Date 

 sprayed. 



Determinations 

 made on. 



Copper (Cu). 



Original 

 fruit. 



Dried 

 fruit. 



JyOss on 

 drying. 



25660 1 

 25661 1 



256621 

 2566.3' 



Check (unsprayed) 



2-4-50 Bordeaux 



2-4-50 Bordeaux plus 2 lbs 

 resin fish-oil soap. 



S-5-50 Bordeaux 



1916 

 1916 

 1916 

 1916 



Whole fruit 



Pulp. 



Skin 



Whole fruit 



Pulp 



Skin 



Whole fruit 



Pulp 



Skin 



Whole fruit 



Pulp 



Skin 



Parts per 

 0.6 



.3 



.5 

 1.2 



.3 

 2.8 

 1.2 



.3 

 2.5 

 1.4 



.3 

 2.5 



■million.. 

 11.3 



7.1 



7.7 

 25.5 



7.3 

 44.4 

 25.5 



7.3 

 39.1 

 28.6 



'6.8 

 38.5 



Per cent. 

 94.7 

 95.8 

 93.5 

 95.3 

 95.9 

 93.7 

 95.3 

 95.9 

 93.6 

 95.1 

 95.6 

 93.5 



1 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 1 



Sprayed lightly with 

 4^4-50 Bordeaux, 2 

 lbs. resin fish-oil 

 soap .2 



Sprayed medium with 

 4-4-50 Bordeaux, 2 

 lbs. resin fish-oil soap 

 (normal spray for re- 

 gion). 2 , 



Sprayed heavily with 

 4-4-50 Bordeaux, 2 

 lbs. resin fish-oil 

 soap. 2 



Oversprayed with 4-4- 

 50 Bordeaux, 2 lbs. 

 resin fish-oilsoap. 2 



Sprayed heavily with 

 4-4-50 Bordeaux, 2 

 lbs. resin fish- oil 

 soap. 5 



Sprayed medium with 

 4-4-50 Bordeaux, 2 

 lbs. resin fish-oil soap 

 (normal spray for re- 

 gion). 5 



Sprayed lightly with 

 4-4-50 Bordeaux, 2 

 lbs. resin fish-oil 

 soap. 5 



1915. 

 June 24, July 



26, Aug. 11, 

 28. 



do 



do.:' 



June 10, July 

 10, 31, Aug. 

 16. 



June 19, July 



27, Aug. 12. 



do 



do 



Unwashed. 





Pa 



rts per 



milHoi 



%. 

 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 





Washed 3... 











88.2 



234541 



Unwashed . 

 Washed '. . . 











88.5 













88.5 



23455 1 



Unwashed . 











88.5 





Washed'... 











88.5 



234561 













87.6 





Washed 3. . 











87.6 



23684 < 



Unwashed . 











86.7 





Washed '... 











86.7 



23685 < 



Unwashed . 











86.1 





Washed '. . . 











86.1 



23686* 



Unwashed . 











85.5 





Washed '. . . 











85.5 



23687 < 













87.4 



25727 1 



Commercially sprayed 

 with 3-3-50" Bordeaux, 

 2 lbs. resin fish-oil 

 soap. 6 



1916. 

 June 26, July 

 27, Aug. 5, 

 25. 



Unwashed 











88.4 





Washed' . 











88.4 















' 



1 Early Black. 



•'Harvested Sept. 18, 1915, Brown MiUs, N. J. 



■ Washed by holding the berries in running tap water. 



* Howe. 



5 Harvested Oct. 16, 1915, Brown Mills, N. J. 



• Harvested Sept. 18, 1916, Brown Mills, N.J. 



T 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 



