Heat is found to increase almost every action; and, therefore, in indolent ulcers, it is sometimes of use, especially for a few days after we begin the management of the sore, as it paves the way for the action of other agents, by beginning a change of the action. Poultices are the vehicle by which it is most frequently applied, and answers, in general, better than other forms. Fomentations are much used by many practitioners, who employ decoctions of different kinds of vegetables; but they have no superiority over poultices. Dry heat was used by M. Hevin, who held ignited charcoal near the sore; and it is sometimes of use to repeat this practice betwixt each dressing. Electricity is of little service; because it cannot be constantly employed; and, therefore, its operation is only temporary. It is worthy of observation, that although this kind of ulcer may be sometimes completely cured by the use of heat, that yet the action is not so perfect, and consequently the structure and power of the part is weaker, than when stimulating dressings are employed. Exercise, or any other cause, is therefore more apt to injure the part afterwards, and make it again break out into an ulcer. The red precipitate, mixed with resinous ointment, in the proportion of a drachm of the former to an ounce of the latter, is a very useful dressing; but the ung. hyd. nit. mixed with four times its weight of hog’s lard, forms an ointment which is still more generally useful. Ten grains of the cuprum ammoniatum, rubbed up with an ounce of basilicon, or simple ointment, is sometimes useful, but cannot be depended on. The same may be said of an ointment composed of an ounce of ung. simplex, and ten drops of the oil of cloves, or of savin. Cloths dipped in the aqua zinci vitriolati, or the solution of cuprum vitriolatum, diluted with water, so as only to smart moderately, are likewise of service, but not so frequently as weak solutions of the nitrates of silver, zinc, copper, bismuth, and many other metallic salts, such as muriate of mercury, &c. Solution of common salt, or of nitre, of such a strength as to produce a moderate smarting, are of temporary advantage, but will not continue their effect long. Indeed all solutions of saline substances, whether alkaline or metallic, are most useful when applied only for half an hour at a time, when the sore is dressing. Mixtures of Thus, elemi, turpentine, canadine balsam, &c. with wax, or oil, have no advantage over the common ung. resinosum[55]. [55] An ointment composed of these resinous substances is much recommended in the Acta Med. Berolin. Tom. VII. p. 58. The bile, either by itself, or diluted, or mixed with yolk of eggs, does not seem to be of much service. Lemon juice, or the mineral acids, particularly the nitrous, diluted so as to be of equal strength with the juice, are frequently of service[56]. Port wine is also an useful lotion.