Fog that you might cut with a knife all the way from London to Newbury. This fog does not wet things. It is rather a smoke than a fog. There are no two things in this world; and, were it not for fear of Six-Acts (the “wholesome restraint” of which I continually feel) I might be tempted to carry my comparison further; but, certainly, there are no two things in this world so dissimilar as an English and a Long Island autumn.—These fogs are certainly the white clouds that we sometimes see aloft.