REMEDIES AGAINST LICE. 107 
Tobacco-tea.—This tea, made of one part common to- 
bacco boiled in 20 to 25 parts of water, or in 20 parts of 
water and 10 parts of vinegar, is a very good wash to kill 
lice on dogs and sheep; it should not be used against those 
infesting horses or cattle, as these animals are very sensitive 
to the use of this remedy. 
Gray mercurial ointment should only be used against 
lice infesting horses and hogs; cattle are injured by this 
poison, and it should only be applied to the parts of the skin 
invaded by the parasites. | 
Persian insect-powder.—This powder, if fresh, is a very 
excellentremedy. It should be applied to the skins after they 
have been moistened slightly so that it will stick. 
Benzine.—1 part to 4 parts of soft-soap and 10 to 15 
parts of water will kill most lice. 
Kerosene-emulsion, to which may be added an extract 
of Persian insect-powder, is one of the best remedies known. 
If no emulsion can be made we have a good remedy by mix- 
ing 8 to 6 parts of linseed oil with one part of kerosene oil. 
Carbolic acid—Very dilute solutions of this substance in 
water make a fairly good wash. 
Raw linseed-oil.—This will readily kill the lice infesting 
the hog. Ifnone of these mixtures or ointments should help, 
Arsenious Acid will surely do so, though being a very poison- 
ous substance it is not wise to use it except in extreme cases. 
A good proportion is the following one: dissolve 16 gr. of 
white arsenic and 16 gr. of potash each in 14% kg. water, 
and add to the mixture of both 11% kg. vinegar. 
No matter which of the above remedies we may apply it 
is always necessary to use them at least twice within an in- 
terval of 5to 7 days. This is required soas to killthe young 
lice hatching from the eggs or ‘nits’. The latter can be 
readily killed by vinegar. 
Cleanliness is allimportant. To simply comb andjbrush 
our domesticated animals, if time permits, is not the 
true way of treating them. Besides sufficient food they 
should be cleaned at least once every day. 
