402 KENNEL DISEASES. 
the filter will be choked. What remains in it should be thrown away. 
By the operations described, which may take two or three days, all the 
virtues of the insect powder will be washed into the demijohn. 
The tincture of the powder, which that now holds, is too strong for a dip, 
and should be diluted with two parts of water. That is, assuming that the dog 
is small and a three gallon dip quite large enough, to make it one gallon of 
the tincture should be added to two gallons of water. 
The effects of this solution are far more lasting than those of the dry powder, 
and a dip every two or three days ought to secure freedom from fleas even in 
most troublesome times; but a dip daily would be perfectly safe. And were 
the solution sprinkled over the bedding and about the kennels, fewer dips 
would be required. 
It stains very light coats, but the discoloration washes off readily after 
having dried. 
Mature dogs are not often infested with lice, but puppies are frequent vic- 
tims, and the favorite location of this vermin is at the back of the neck, where 
they appear as small steel gray specks. 
Lice may be destroyed by the remedies recommended for fleas, but where 
the infested subjects are puppies it is best to use an emulsion made of kerosene 
oil, two parts, and fresh skimmed milk, one part. This should be prepared 
as follows: 
Heat the milk, and while hot put it into a bottle considerably larger than 
required for the mixture, together with twice as much oil as milk; then shake 
the whole vigorously for several minutes, by which means the ingredients will 
be thoroughly mixed. 
As soon as it has cooled sufficiently apply the mixture with a sponge or 
stiff brush, such as painters use, and with considerable force, that the skin 
may be well bathed. On the day following it will be advisable to employ a 
fine-tooth comb on the parts treated; and if any of the vermin are yet alive, a 
second application of the milk and oil will be indicated. 
Druggists have on sale the crude petroleum oil, which is destructive of lice, 
and can be used freely with perfect safety. It should be applied to the hair 
with a brush, be allowed to remain on for three hours, and then washed off 
with warm water and soap. This operation should be repeated on three suc- 
cessive days, when the nits may be removed by combing the hair very carefully 
with a fine-toothed comb wet with vinegar. 
Another agent, which will immediately destroy all varieties of lice and their 
nits, and of which a single application only is necessary, is the oil of sassafras. 
In using this care must be taken to keep it from the eyes or mouth, for it 
will burn mucous membranes painfully. 
A more expensive preparation, but much to be preferred for use on house 
pets, is composed as follows: — 
