In all cases, except one, my excuse is that the mistaken views in question are so embedded in the form and substance of the papers in which they occur, that it would have been impossible to correct them without practically substituting new papers for the old ones; and that, in spite of these mistakes, the old papers, as they stand, still seem to me, on the whole, to say things which are worth saying in a form which, however defective it may be, I doubt my own ability to improve upon.