preface
11
others in part; in short, whatever I thought deserving of particular attention, for the sake of giving a distinct idea of the book.
Perhaps some of the translated parts might as well have been put in an abstract; the truth is, that having made them originally in their present form I have not thouglit it worth while to alter them.
The notes are only a few remarks which I thought might be of use to save trouble and to furnislt necessary explanation.
