THE RCSE-CHAFER. 8 
yards and orchards are often devastated, and the fruit crop of certain 
sections of country destroyed. It is no uncommon sight to see every 
young apple on a tree completely covered and obscured from view by 
a sprawling, struggling mass of beetles. (See fig. 4.) 
Since the late eighties the rose-chafer has been particularly injuri- 
ous in grape-growing regions and has been the subject of research 
and experiment at the New Jersey Agricultural Experiment Station 
and by the Bureau of Entomology in the Lake Erie region of 
Pennsylvania.? 
Fic. 2.—Grape foliage showing injury by rose-chafer. (Original.) 
ROSE-CHAFER POISONOUS TO CHICKENS. 
It has frequently been stated that the rose-chafer is injurious to 
small chickens, and it was the general belief that their death was due 
to mechanical injury or puncturing of the lining of the digestive tract 
by the spines on the legs of the beetles that had been swallowed. In 
other cases it was stated that the rose-chafer had eaten into the crops 
of the chicks. Cases have been reported recently of hundreds of 
chickens being killed in this manner. Death usually occurred in 
from 9 to 24 hours after feeding. Some experiments have been per- 
formed to determine the cause of the injury, and it was proved that 
1 Johnson, Fred. Vineyard spraying experiments against the rose-chafer in the Lake 
Erie Valley. U.S. Dept. Agr. Bur. Ent. Bul. 97, pt. 3, p. 53-64, pl. 4-7, fig. 16-21. 1911. 
