PSORA SCABIES. 375 



Boil until the fluid is reduced to one-third, and then add 

 as much water as has been lost by evaporation. This 

 preparation is the celebrated ''Bain de Tessier," so 

 highly prized in France. The following will answer the 

 same purpose, which will not stain the wool, as it contains 

 no sulphate of iron, and will, no doubt, be preferred by 

 many to the preceding one on that account. Arsenious 

 Acid, 2 pounds; Sulphate of Zinc, 10 pounds; Water, 

 60 gallons: mix. Prepare as the foregoing one. Each 

 of these valuable sheep-dipping mixtures are sufficient to 

 cure and dip one hundredsheep. 



The way sheep-dipping mixtures are sometimes used is 

 far wrong, as was the case of the celebrated sheep-poi- 

 soning case at Burton, England, where the animals were 

 driven, immediately after their bath, containing twenty 

 ounces of arsenic, twenty ounces of soda-ash, two ounces 

 of sulphur, to their pasture, with their wool saturated 

 with it, and consequently dripping from the wool on the 

 grass that the sheep were just eating. 



The improved plan in dipping sheep are, First, The 

 solution or the mixture is to be put in a tub, or other 

 vessel, sufficiently large to allow the sheep (except the 

 head) to be immersed in it, without the mixture running 

 over the sides of the tub or vessel. Second. When the 

 sheep is taken out, it must be placed in another tub or 

 vessel, and the liquid pressed from the wool, and returned 

 again into the dipping vessel. TJiird, The sheep must 

 be kept enclosed in a sheep-fold, or other sufficiently airy 

 place, where there is no food of any kind that a sheep 

 will eat, until the wool is perfectly dry. 



Several of the veterinary professors of the Edinburgh 

 veterinary colleges, after this sheep-poisoning case oc- 



