New elements of operative surgery . eding ; we then cover thesurface with a square piece of lawn, tulle, orgauze, (Fig. 136,) or very open muslin. Thesetissues, representing a net-work with largespaces, suffice to restrain the oozings of thepaste without in any manner interfering withits action upon the diseased surfaces. If wehave neither tulle, lawn, gauze, nor muslin,we should at least make use of linen that isold, or as thin as possible. § III.—Remarks on the use of Cataplasms. Temperature. Cataplasms should be applied hot; that is, at atemperature of from 25 to 30 of Reaumur, [th
New elements of operative surgery . eding ; we then cover thesurface with a square piece of lawn, tulle, orgauze, (Fig. 136,) or very open muslin. Thesetissues, representing a net-work with largespaces, suffice to restrain the oozings of thepaste without in any manner interfering withits action upon the diseased surfaces. If wehave neither tulle, lawn, gauze, nor muslin,we should at least make use of linen that isold, or as thin as possible. § III.—Remarks on the use of Cataplasms. Temperature. Cataplasms should be applied hot; that is, at atemperature of from 25 to 30 of Reaumur, [that is, about90 to 100 of Fahrenheit.] Below this temperature they are chillyand cold, and become easily converted into revulsives, {reper-cussifs,) or resolvents, (resolutifs.) Above it, they are excitants, oreven rubefacients. Re-application. Simple cataplasms should be renewed everytwelve hours at least, and applied in layers sufficiently thick to re-main moist during this lapse of time. Kept on for longer periods, (Fig. 136.). 214 NEW ELEMENTS OF OPERATIVE SURGERY. they might dry and irritate the parts in the manner of hard irregu-lar bodies. In applying a cataplasm, it is well to recollect, that byits weight it tends to run and spread upon descending surfaces; andthat it is better, therefore, to apply it from the projecting points tothe deep-seated parts, or from the anterior region to the posteriorregion of the diseased surface, than in the contrary direction.* Removal. To remove them, it is generally quite sufficient to seizethem by their longest border, and then gently and quickly to turnthem back by making them roll, as it were, upon an axis to theopposite border. If the folds of linen on the poultice should be ad-herent in any place, we moisten them with tepid water before de-taching them. When the cataplasm is too soft, or adheres to thecutaneous tissue rather than to the compress, we liberate the skinfrom it by drawing upon it gently with the border of the plaster
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