268 REporRT OF THE ENTOMOLOGISTS OF THE 
ture. This not only makes the vines offensive, but the applica- 
tion of it drives the beetles away from them. Its use gave just as 
good results as air-slaked lime; besides it had the advantage, 
when employed at the rate of four pounds of copper sulphate to 
forty-four gallons of water, of not injurying or stunting the vines 
in the least. Furthermore, it can be more uniformly appled to 
all parts of the vines and it adheres better than air-slaked lime. 
(2) Aur-slaked lime.— Dusting the plants with air-slaked lime 
has long been recommended and often proves quite successful for 
driving the beetles from the vines as well as being distasteful to 
them. But, in order to prove successful, the beetles must not 
- occur in large numbers; must have passéd their first feeding period 
and commenced to pair, or other food plants must be plentiful. 
Tests during two years convince me that generally the use of air- 
slaked lime, without a bait crop, causes the beetles to work down 
next to the root and gnaw at the stems below the surface. It is 
also liable to be too caustic and stunt the vines. Some have 
recommended the use of Paris green with air-slaked lime. Tests 
of this have resulted the same as in the use of Paris green with 
Bordeaux mixture, viz.: no beetles could be induced to feed upon 
the parts of the plants protected with the lime and Paris green. 
(3) Other remedies.— The following mixtures and remedies 
have been tested along with air-slaked lime: Kerosene mixed with 
air-slaked lime, turpentine mixed with air-slaked lime, kerosene 
mixed with land plaster, turpentine mixed with land plaster, rags 
and corn cobs dipped in kerosene and placed near the plants, and 
tobacco dust. 
The first four gave no better results than air-slaked lime used 
alone. Land plaster had the advantage of not stunting the vines. 
Kerosene used on rags and corn cobs, which is said to smell so 
bad that the beetles will not stay in the same field, was of no value 
whatever. Tobacco dusted on the leaves and placed around the 
base of the plants to the depth of one-fourth inch was of no value 
