defervesce

[Carl Reinhold August] Wunderlich, who has made probably more observations with the thermometer than any other living man, has determined, for example, that in simple croupous pneumonia, where the temperature does not exceed 104°, Fahrenheit, the pulse 120, and the respiration 40 in the minute, the case may be considered a favorable one; will surely reach its crisis in from six to ten days, and defervesce, without any medical treatment, except proper attention to the ordinary hygienic and dietetic rules.

[I]n common ſcortation, or ſimple adultery, there is not a love analogous to conjugial love, for it is only a heat of the fleſh, which inſtantly deferveſces, and ſometimes does not leave any trace of love behind it towards it's object; […] It is otherwiſe in the caſe of polygamical ſcortation; herein there is a love analogous to conjugial love, for it doth not deferveſce, is not diſſipated, nor doth it paſs off into nothing after efferveſcence, as the foregoing, but it remains, renews, and ſtrengthens itself, and so far takes away from love to the wife, and in the place thereof induces cold towards the wife; […]