Sentence:  ... Haste and Sickness made me rather venture on your good Nature, for the Pardon of a venial Fault, than put myself to the trouble of altering the Order of these Papers, and substituting new Transitions and Connections, in the room of those, with which I formerly made up the "Chasms" and <WSD>Incoherency</WSD> of the Tract, you now receive. 
Meaning of the word marked with <WSD> tags:  The quality of being incoherent; lack of coherence.