58 BULLETIN 1027, U. S. DEPARTMENT OE AGRICULTURE. 
SUMMARY. 
The amounts of arsenic, lead, and copper remaining on mature 
fruits and vegetables which have been sprayed according to various 
schedules were determined in the Bureau of Chemistry. Table 15 
gives the maximum and minimum results. 
Because of overspraying or late spraying, comparatively large 
quantities of spray residues were found in some cases. This em- 
phasizes the importance of spraying according to the schedules rec- 
ommended by the Bureaus of Entomology and. Plant Industry. 
The extent of the reduction of spray residues on the mature fruit 
and vegetables by washing and wiping them was determined by a 
series of analyses before and after such treatment . 
When peeled, sprayed fruits and vegetables contain essentially the 
same amounts of arsenic, lead, and copper as the unsprayed products, 
indicating that practically all of the spray residues can be removed 
by peeling. 
From the results reported in this bulletin it is evident that when 
fruits and vegetables are sprayed in accordance with the schedules 
recommended by the Bureaus of Entomology and Plant Industry, but 
little of the material used remains on the fruit or vegetable at har- 
vest time. 
LITERATURE CITED. 
(1) Academy of Medicine (France). 
Proc. Acad. Med.. Feb. 18, 1908. Bull. acad. med., 3 ser.. 59 (1908V 246. 
(2) 
Proc. Acad. Med., Feb. 2. 1909. Bull. acad. med.. 3 ser.. 61 (1909): 194. 
(3) ; 
Sur un projet dedecret portant modification de 1'ordonnance de 1846 
relative a la vente des substances veneneuses. Bull. acad. med., 3 ser.. 
70('±913 x >: 152. 
(4) 
Proc. Acad. Med., Nov. 11, 1913. Bull. acad. med., 3 ser., 70 (1913): 
368, 369. 
(5) 
Proc. Acad. Med., Mar. 3, 1914. Bull. acad. med.. 3 ser., 71 (1914': 
324. 325, 326. 
(6) Alwood. W. B. 
Treatment of diseases of the grape. Ya. Agr. Exp. Sta. Bull. 15 (1892) : 41. 
(7) Ampola, G., and Tommasi, G. 
I composti di arsenico in agricoltura. Ann. staz. chim. agrar. sper. Roma, 
2 ser., 5 (1911): 241; J. Soc. Chem. Ind. ; 31 (1912): 891; Chem. Abst., 7 
(1913): 1255; Exp. Sta. Rec, 30 (1914): 130. 
(8) Andouard, A. 
Le cuivre dans les vins provenant de Yignes traiteea par le sulfate de 
cuivre. Compt. rend., 104 (1887): 195; Bull. soc. nat. agr. (France), 47 
(1887): 40; J. pbarm. chim., 5 ser., 15 (1887): 290. 
