634 



SCABIES — SCAB — MANGE. 



well to add flowers of sulphur (1 lb. to every 6 gallons) as a protection 

 against reinfection. 



The advantages of carbolic dips are that they act more rapidly than 

 the tobacco or sulphur dips, and that the prepared carbolic dips are very 

 easil}^ mixed in the bath. They also seem, according to Gillette, to have 

 a greater effect on the eggs of the parasites than either the sulphur or 

 the tobacco dips. The great disadvantages of this class of dips are — first, 

 in some of the proprietary dips, that the farmer is uncertain regarding 

 the strength of material he is using ; second, the sheep receive a greater 

 set-back than they do with either lime and sulphur or tobacco. 



Fici. 260. — An advanced case of connnon scab. 



The United States Bureau of Agriculture is inclined to be extremely 

 conservative in regard to them, and to advise their manufacturers to 

 prepare them in a guaranteed strength with more explicit directions for 

 use than are to be found in the present circulars. 



One of the prominent proprietary carbolic dips was formerly recog- 

 nised as one of the three official dips in New South Wales, but it has 

 now been erased from the list. In Cape Town carbolic dips are not 

 much used, and in the official reports little is said concerning them. 



The United States Bureau of Animal Industry gives the following 

 advice as regards dipping : 



(1.) Select a dip containing sulphur. If a prepared "dip" is used 

 which does not contain sulphur, it is always safer ■ to add about 



