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 

 excellent remedy. 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 3 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.— Th\s will readily kill the lice infesting 

 the hog. If none 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 I1/2 kg. water, 

 and add to the mixture of both IV2 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 5 to 7 days. This is required so as to kill the young 

 lice hatching from the eggs or "nits". The latter can be 

 readily killed by vinegar. 



Cleanliness is all important. To simply comb and^brush 

 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. 



