534 
Ure, Bap. She 
Fig. 2. Periodical Cicada: Seetion of sod with 
pupal gallery extension above ground. (Orig- 
inal. ) 
less against the pupae. Some experiments 
carried on by the United States govern- 
ment show that newly emerged pupae 
may be destroyed by spraying with a 2 
per cent solution of carbolic acid or a 15 
per cent solution of acetic acid. 
Coating the trees with whitewash or 
spraying with a strong solution of lime- 
sulphur offers a possible protective means 
against egg deposition, as it has been 
stated that the cicadas do not like to sit 
on a white surface. 
Phenococcus 
P. dearnessi 
The immature insects hibernate under 
the rough bark of apple trees. Eggs are 
laid in early summer, the young migrat- 
ing to the under side of leaves. The in- 
sect secretes a cottony substance as 
shown in the illustration. 
The usual remedies for scale. 
Rabbits 
By H. F. Winson 
The first suggestion would be to remove 
all brush piles and thickets and other 
places which offer hiding places or may 
serve as breeding places. 
Repellents 
Perhaps the easiest to apply and about 
as efficient as any repellent is the com- 
ENCYCLOPEDIA OF PRACTICAL HORTICULTURE 
mon lime-sulphur spray applied to the 
trunks of the trees so as to drench them. 
The Arkansas Experiment Station rec- 
ommends painting the trunks of trees in 
the fall with white lead and linseed oil. 
Mixed paints should not be substituted 
for the above, as they may contain oils 
which would injure the trees. This seem- 
ed to give very satisfactory results and 
had the advantage of remaining on the 
trees for an entire season. 
The Oklahoma Station recommends the 
following formula which they found very 
satisfactory: “Water one gallon, one 
pound soap, two to four ounces of car- 
bolic acid.” Some prefer to add enough 
vermilion red to give the mixture a good 
pink color and the consistency of cream. 
This is painted on the trunk of the trees 
in the fall with a brush or swab of rags 
tied to a stick. 
Tree Protectors and Wrappers 
Wire window screen and fine chicken 
fence wire may be used with success in 
case of small trees. They should be about 
two feet high and should be allowed to 
stand out a short distance from the tree. 
The tubes should be fastened with wire. 
Wooden veneer strips or some of the 
ready-made protectors may be used with 
dearnessi. 
Phenococcus 
