PSOROPTIC MANGE — SHEEP SCAB. 627 



cure for scab in sheep." (Dr. Bruce, Chief Inspector of Sheep for 

 New South Wales.) 



The proportions adopted by Eutherford, and afterwards made 

 official by the scab sanitary authorities, are — 



Tobacco leaves . . . . . . 1 lb. 



Flowers of sulphur . . . . . . . . . . 1 ,, 



Water . . . . . . . . . . . . . . 5 gallons. 



The advantage of this dip lies in the fact that two of the best scab 

 remedies, namely, tobacco (nicotine) and sulphur, are used together, 

 each of which kills the parasites, while the sulphur remains in the wool 

 and protects for some time against reinfection. As no caustic is used 

 to soften the scab, heat must be relied on to penetrate the crusts. 



Directions for pre paring the dip. — Infusing the tobacco : — Place 

 1 lb. of gold-leaf or manufactured tobacco for every G gallons of 

 dip desired in a covered boiler of cold or lukewarm water, and allow 

 to stand for about twenty-four hours ; on the evening before dipping 

 bring the water to near the boiling point (212'^ Fahr.) for an instant, 

 then remove the fire and allow the infusion to stand overnight. 



Thoroughly mix the sulphur (1 lb. to every 6 gallons of dip 

 desired) with the hand in a bucket of water to the consistency of 

 gruel. 



When ready to dip, thoroughly strain the tobacco infusion from 

 the leaves by pressure, mix the liquid with the sulphur gruel, add 

 enough water to make the required amount of dip, and thoroughly 

 stir the entire mixture. 



Lime- and-Sidph ur Dips . 



Under the term " lime-and-sulphur dips" is included a large 

 number, of different formulae requiring lime and sulphur in different 

 proportions. 



To give an idea of the variety of the lime-and-sulphur dips, the 

 following list is quoted, the ingredients being reduced in all cases to 

 avoirdupois pounds and United States gallons : 



(1.) The original "Victorian lime-and-sulphur dip," proposed by 

 Dr. Eowe, adopted as official in Australia : 



Flowers of sulphur . . . . . . . . . . 20^ lbs. 



Fresh slaked Ihue . . . . . . . . . . . . 10^ ,, 



Water 100 gallons. 



(2.) South African (Cape Town) official lime-and-sulphur dip, 

 February 4th, 1897: 



Flowers of sulphur . . . . . . . . . . . . 20| lbs. 



Unslaked Imie . . . . . . . . . ...... 16§ ,, 



Water 100 gallons. 



S S 2 



