The elements of materia medica and therapeutics . mation. In some constitutionaldiseases (as scrofula and secondary syphilis) it has been used as analterative. Tortual has proposed sulphur as a preservative againstmeasles : but, as might be expected, experience shews sulphur pos-sesses no prophylactic power of this kind, and that the only preser-vative is isolation. /3. Externally.—Sulphur is a most valuable remedy in various skindiseases, more especially scabies; and notwithstanding many substi-tutes have been proposed for it in the latter disease, none are so Christisons Treatise on Poisons.
The elements of materia medica and therapeutics . mation. In some constitutionaldiseases (as scrofula and secondary syphilis) it has been used as analterative. Tortual has proposed sulphur as a preservative againstmeasles : but, as might be expected, experience shews sulphur pos-sesses no prophylactic power of this kind, and that the only preser-vative is isolation. /3. Externally.—Sulphur is a most valuable remedy in various skindiseases, more especially scabies; and notwithstanding many substi-tutes have been proposed for it in the latter disease, none are so Christisons Treatise on Poisons. Heilmittell. Bd. 1, S. 196. > See p. 196. n Pharmacologia, vol. i, art. Cathartics. SULPHUE. 461 generally successfuL It is supposed by some that its curative powersin this disease depend on its poisonous influence over the so-calleditch-insect {Sarcoptes Hominis of Raspail, the Acarus Scabiei of otherwriters): a little parasite belonging to the class Arachnida of articu-lated animals, and, therefore, improperly termed an insect^. Fig. Sarcoptes Hominis—(Raspail.) But before adopting this explanation of the modus medendi ofsulphur, it is to be proved that the animal is the cause of the disease;for, at present, it has not been satisfactorily shown whether it be thecause, effect, or mere accompaniment of itch. Rayer^ observes, thatit is indubitable that the number of these insects bears no proportionto that of the vesicles. It is, further, he adds, rare to discoverthese insects on the abdomen and on groins, where the eruption ofscabies is nevertheless very common and very apparent; moreover,scabies is known to continue when no more acari are to be is also a most valuable application in various other skindiseases, as porrigo, impetigo, &c. Admintstration.—Internally, it is usually given with syrup, ortreacle, in the form of an electuary, or suspended in milk. The doseof it, as a purgative, is from one to tliree or four drachms. As analterative and
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