June, 1917.] ARSENICAL RESIDUES AFTER SPRAYING. 7 



PAGE 



Poultry 58 



Hens and young chicks confined in pens and pastured on 

 grass cairying arsenate of lead at concentrations of 3, 

 6 and 10 lbs. to 50 gallons developed no symptoms of 

 serious poisoning altho fed on 10 successive plots within 

 a period of 56 days 58 



Analyses of hay made from plots that had been directly 

 sprayed with arsenate of lead disclosed only minute 

 amounts of arsenical residues 60 



Bibliography 61 



