DOMESTIC ANIMALS. 183 



being burnt, as they will contain both the parasites and 

 their eggs. Now a 15 per cent, solution of creoline in 

 water should be applied, and the treatment repeated 5 

 days after, two or three times successively ; or the fol- 

 lowing application may be used instead : 2 ounces of 

 tobacco, boiled in a quart of water for 15 minutes, and 

 repeated every 4 or 5 days. As this solution does not 

 destroy the vitality of the eggs, and as they hatch out 

 in a few days, repetition of the application will destroy 

 each new brood. 



Treatment for Scab in Sheep. When only a few sheep 

 are affected, and the invasion is recent, the application 

 3 or 4 times at intervals of 4 or 5 days of the tobacco 

 solution mentioned above will be sufficient to effect a 

 cure ; but if, as frequently happens, a whole flock be- 

 comes infected, the successful treatment will be a 

 problem of much greater difficulty, on account of the 

 impossibility of isolating those that may be easily cured 

 from those in which the disease is deep-seated and hard 

 to cure. The following will eradicate the scab from a 

 large flock when fully carried out. The most economi- 

 cal treatment for a large number of animals will be by 

 using a dipping fluid, to make which there are numer- 

 ous receipts. The cause of the non-success of most of 

 them is that the details of application are rarely carried 

 out. If the wool is long it will be much more difficult 

 to effect a. cure than just after its removal. The sheep 

 to be treated should therefore be shorn before the 

 treatment is begun. The French use a solution of 

 creoline in water in the proportion of 1 pint creoline to 

 10 gallons of water aud a pint of glycerine. In Great 

 Britain the preparations of arsenic are mostly used, a 

 formula of which I will here give. Arsenic 35 J ounces, 



