It is also a most excellent application for inflamed eyes in the second or sub-acute stage. * * * * * PROPHYLACTICS. (_Preventives of Disease._) TO PREVENT SCARLET FEVER Give Belladonna at the 3d attenuation, three to six pellets, according to the age of the child, every morning, during the prevalence of the epidemic. This is for the common or mild form of the disease. If the prevailing epidemic is of the _malignant_ kind, producing fatal ulcerations of the throat, give _Bell._ once in two days and _Mercurius Corrosivus_ at the 3d attenuation on the alternate day. While _Bell._ is a very certain preventive of the common eruptive Scarlatina, it is not as certain to prevent the _malignant_ form. Though it renders the latter much more mild, the _Merc. Cor._ is necessary to ward it off entirely, or so modify as to divest it of the dangerous features. TO PREVENT YELLOW FEVER Take _Aconite_, _Belladonna_ and _Macrotin_, 1st in rotation one dose a day. If there is any headache, or pains occur in other parts of the body, or a languid feeling, take a dose twice or three times a day in rotation. TO PREVENT BILIOUS FEVER OR AGUE Take _Podophyllin_, _Baptisia_ and _Gelseminum_ 1st in rotation, one dose at night, and if symptoms of fever, as headache and loss of appetite, or bad taste in the mouth in the morning appear, take a dose three times a day, and refrain entirely from food for one or two days. TO PREVENT TYPHOID FEVER When exposed, as in nursing the sick, take _Baptisia_ 2d, and _Macrotin_ 2d, a dose three times a day. TO PREVENT SMALL-POX Use _Macrotin_ 1st night and morning, and if nursing or exposed frequently, use it every four hours. TO PREVENT CHOLERA. _Camphor_ (_pellets medicated_ with the pure tincture) _Veratrum_ 3d, and _Arsenicum_ 3d, should be taken in rotation--a dose morning, noon and night, in the order named; so as to take a dose of each every twenty-four hours. If any sense of weakness or trembling comes on, use the _Camphor_ oftener; if pain or uneasiness in the bowels threatening diarrhoea, use the _Veratrum_, and for increased thirst with uneasiness at the stomach _Arsenicum_ more frequently. TO PREVENT DIARRHOEA Where it is prevailing as an _epidemic_, _Ipecac_ at night, and _Veratrum_ in the morning will often _suffice_. For _teething children_ give _Ipecac_ and _Chamomilla_ in the same manner. TO PREVENT DYSENTERY In hot weather when bilious diseases prevail, use _Mercurius_ 3d, _Podophyllin_ 2d, and _Leptandrin_ 1st in rotation, giving one dose a day. In the winter, or when _Typhoid fevers_ prevail, use _Mercurius_ and _Rhus_ tox. alternately a dose every day. TO PREVENT ITCH. A dose of _Sulphur_, or rubbing a little flour of sulphur on the hands, will generally suffice. TO PREVENT COLDS