This electuary is a gentle cathartic, keeping the body coolly open, and therefore very useful in fevers, and weak constitutions when openness of the body is required. The bigness of a large nutmeg is a dose, which may occasionally be repeated. K. _Turner’s Cerate_: _Take olive oil a pint, yellow bees wax and prepared calamine stone, of each half a pound; melt the wax and oil, and mix the calamine stone: keep stirring till it is cool._ This is a healing cerate, very useful in scalds and burns; as also to dress blisters with; likewise for the external dressing of sores, when near healing, or to keep other dressings on. L. _Fever powders_: _Take purified nitre powdered half a pound, crabs eyes prepared four ounces, cinnabar of antimony finely prepared two ounces, calomel one drachm, and mix them._ This is the celebrated antispasmodic powder of the great _Stahl_, with some considerable amendment by means of the calomel; which, in the course of a long practice, I have found the most beneficial for fevers. There is not a kind of fever to which mankind are subject, either at shore or at sea, but what this powder may with safety and with great benefit be applied. A scruple, or half a drachm is a dose, and which may be repeated, as the ardency of the fever shall require. M. _Stomach powder_: _Take purified nitre prepared and chalk, of each eight ounces, nutmeg two ounces; reduce all to a fine powder, and let them be properly mixed._ This is an excellent powder against the heart-burn, or other crudities of the stomach and bowels; for whilst it absorbs the crudities and accidities in the first passage, it is at the same time a gentle digestive, and withal a carminative: Hence in heart-burn, belching, and other disagreeable symptoms of depraved appetite it is highly useful. N. _Calomel_: _This is a dulcified mercury, made of sublimate mercury four ounces, pure quicksilver three ounces; intimately mixed, and sublimed six times, according to the art in chymistry._ This is the safest and gentlest of all mercurial preparations, and if judiciously administered, may be deemed one of the greatest of all medicines. I shall therefore be somewhat particular on this head. In the first place, it should be faithfully prepared; and secondly, levigated as fine as is possible; to do this therefore, I have in my Treatise on the Venereal Disease, recommended it to be ground with a little water on a flat marble, to the finest degree possible, and then dried up for use. The fineness of this excellent medicine is of the greatest importance, and ought to be strictly attended to, for not only much mischief has been done by its rough particles in the bowels, but it must follow, that the finer it is, the farther it goes. And with all mercurials, it should be strictly observed, the less quantity we can make do, the more we may hope for success.