glaringness

There is no doubt at all as to his genius, nor his breadth of view and comprehensive grasp of the knowledge of his time, nor of his ability as a vigorous writer, though his crudities of style and frequent indulgence in vulgarity, have made him a writer largely for men, and even many of these have been deterred from the study of his writings because of the glaringness of these faults.

There was enough of difference to catch the eye and not enough of glaringness to offend it.