IT has long been one of my pleasantest anticipations to look forward to the time when I might offer to you, my old and dear friend, some such acknowledgment of the value I place on your affection for me, and of my grateful sense of the many acts of kindness by which that affection has been proved, as I now gladly offer in this place. In dedicating the present work to you, I fulfil therefore a purpose which, for some time past, I have sincerely desired to achieve; and, more than that, I gain for myself the satisfaction of knowing that there is one page, at least, of my book, on which I shall always look with unalloyed pleasure--the page that bears your name.