434 KXTKRNAL PARASITES OF ANIMALS 



Disinjtdant fur ticks in infested stables. 



Eradication will be inucli facilitated if at the beginning of the work 

 all litter and manure are removed from stables, sheds, and yards that 

 have been occupietl by the cattle, and deposited on land where cattle are 

 not permitted to run. After this is done, the buildings should be 

 thoroughly disinfected to tlestroy any eggs or ticks that may be there. 

 For thi.s purpose the following substances may be used : 



1. A mi.xture made with not more than U pounds of lime and 

 i j)()und of pure carbolic acid to each gallon of water. 



2. Any coal-tar creosote dip permitted by the United States Depart- 

 ment of Agriculture in the official dipping of sheep for scabies, 

 diluted to one-fifth of the maximum dilution specified for dipping 

 sheep. 



A spray pump should be used to apply the disinfectant, and the 

 walls, floors, and various fixtures of the buildings should be thoroughly 

 sprayed. 



Other External Parasites of Farm Animals (Crosby) 



The iiiseclicides. 



Following are the leading insecticidal substances used against fleas, 

 lice, ticks, and other pests of farm live-stock : — 



Lime-and-sulfur dip. 



Unslaked linic 8 lb. 



Flowers of .sulfur 24 lb. 



Water 100 gal. 



Slake the lime in a little water and add the sulfur, stirring constantly. 

 Transfer the mass to 25 gallons of hot water, and boil for two 

 hours, adding water to replace that boiled away. Let the solution 

 stand until all .sediment has settled and then draw off the clear liquid 

 and dilute to 100 gallons. (U. S. Bureau of Animal Industry.) 



Nicotine 8ohUio7is. — There are now on the market nicotine solutions 

 with a guaranteed strength of from 5 to 40 per cent of nicotine. 

 For uav. they should be so diluted as to give a solution containing 

 lEo of 1 per cent of nicotine, and I62 pounds of flowers of sulfur 

 should be added to each 100 gallons of the liquid. 



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