A
piece of tissue or silver paper, interposed between the blister and the
skin, will answer the same purpose; the blister will act well, and the
evils before alluded to will be prevented.
After a blister has been two or three hours applied, its edge should
be carefully raised, to ascertain the effect produced; and if the
surface be much inflamed, more particularly if little points of
vesication (watery bladders) are present, it should be removed, and the
above directions attended to.
Mustard poultices are invaluable in some of the diseases of infancy
and childhood, and therefore frequently ordered.
A mustard poultice is made by mixing two thirds of mustard flour and
one third of wheaten flour with warm water or vinegar, in sufficient
quantity to render the powder of the consistence of paste. It is then
spread on linen from the size of a half-crown to that of the palm of
the hand, according to the effect intended, and placed on the skin. How
long it is to be kept on will depend upon the individual sensibility of
the skin of the child; but, in general, from fifteen to twenty minutes
will be found amply sufficient. The application, however, must at all
times be carefully watched; for if it remain on too long, ulceration,
and death of the part, might ensue; therefore, directly the skin is
found tolerably red, the poultice should be removed.
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