Sentence:  For though it be something wonderful to tell that any should have hearts so hardened, in the midst of such a calamity, as to rob and steal, yet certain it is that all sorts of villainies, and even <WSD>levities</WSD> and debaucheries, were then practiced in the town as openly as ever: I will not say quite as frequently, because the number of people were many ways lessened. 
Meaning of the word marked with <WSD> tags:  A lighthearted or frivolous act.