Mathieu of Sèvres replaced the sulphate of iron by an equal quantity of alum. In this case, each quart of the bath contains 2½ drachms of arsenious acid.
Clément’s and Mathieu’s formulæ have given just as good results as Tessier’s.
A last formula is that of Professor Trasbot. The aloes is of very little use, however, because it is almost insoluble.
| For 100 sheep | Arsenious acid | 2 | lbs. |
| Sulphate of zinc | 10 | „ | |
| Aloes | 1 | „ | |
| Water | 25 | gallons. |
Condition of the animals after the bath.—On leaving the bath the abraded parts are slightly cauterised. During the five or six following days the skin is stiff, and covered with adherent crusts over the points attacked by the parasites. The animals no longer scratch or bite themselves.
Towards the eighth day the crusts fall, the skin appears supple and of a pink colour, and the wounds cicatrise. In animals which have suffered for a long time recovery is much slower, and may extend over from thirty to fifty days. The wool again grows soft and bright, while the sheep rapidly regain their spirits and condition. The cicatrisation of the wounds is often accompanied by intense itching, which must not be taken as a sign of the persistence of the disease. It is well, however, to keep the animals under observation at this period.
Under any circumstances, six weeks or two months should always be allowed to elapse before giving a second bath. Should a few spots appear to be attacked secondarily, they may be moistened with a little of one of the bath liquids.
In Germany the creolin bath is generally employed:
| For 100 sheep | { Water | 250 | gallons or parts. |
| { Creolin | 6·5 | „ |
Each sheep is bathed a second time after an interval of one week, the animal being immersed for three minutes in the bath and thoroughly scrubbed with a brush. The efficacy of this method, however, is less certain.