Sentence:  ... he pull'd the Trigger, but Providence being pleas'd to preserve me for some other Purpose, the Cock snapp'd, and miss'd Fire. Whether the Prime was wet in the <WSD>Pan</WSD>, or by what other Miracle it was I escap'd his Fury, I cannot say ... 
Meaning of the word marked with <WSD> tags:  The part of a flintlock that holds the priming.