Sentence:  No longer were social parties the old heraldic solemnities enjoyed by red letters in the almanac, in which the chief objects were to discharge some arrear of ceremonious debt, or to ventilate old velvets, or to <WSD>"apricate</WSD>" and refresh old gouty systems and old traditions of feudal ostentation, which both alike suffered and grew smoke-dried under too rigorous a seclusion. 
Meaning of the word marked with <WSD> tags:  To disinfect and freshen by exposing to the sun; to sun.