Crown Borers. 451 
best methods of supressing this insect are two. A preventive 
treatment consists in coating the base of the tree a few inches 
below the surface and a foot above with a whitewash, with a 
pint of coal tar to each five pounds of quicklime, put in while 
California Peach-borer. 
the lime is slaking. This should be done in April. A killing 
treatment which has proved effective and safe to the tree is car- 
bon bisulphide, when wisely used. Mr. Ehrhorn gives these 
precautions :-— 
Carbon bisulphide should not be applied when the soil is wet or 
just before a rain, nor just after cutting out borers and putting on lime 
and‘ other preventives. Avoid putting it on the bark of the tree. 
Procure a machine oiler which will hold about eight ounces of carbon 
bisulphide, remove the soil around the trunk of the tree about six inches 
wide and six inches deep, being sure to detach all soil adhering to the 
trunk of the tree. After this is done, fill'in this space with loose soil 
to the level again. Now squirt the liquid a few times from one to one 
and one-half inches away from the bark around the tree, and cover im- 
mediately with six inches of soil. Borers have been killed in from 
twenty hours to three days; after they are found to be dead, the soil 
should be removed from around the trees so that any remaining fumes 
of bisulphide can be dissipated. 
Strawberry Root-Borer.—The larva of another clear-winged 
moth (Acgeria impropria), boring into the root of strawberry 
Strawberry Root-borer; Pupa, Grub and Moth. Currant Borer (enlarged) and Moth. 
plants, found in various portions of the State, and doing consid- 
erable damage, forcing the growers to resort to replanting much 
