Connection or dependence, proceeding from the subordination of the parts of a thing to one principle or purpose, as in the parts of a discourse, or of a system of philosophy; a logical and orderly and consistent relation of parts; consecutiveness. [
1913 Webster]
"Coherence of discourse, and a direct tendency of all the parts of it to the argument in hand, are most eminently to be found in him."
[1913 Webster]