. _There is no
colophon, printer's Mark, or date at end. Quarto. Woodcut initials, and
diagrams. Twelve etched plates of various sizes inserted._

With the exception of the preliminary matter and the Instructions to
binder, the pagination is the same as in the edition of 1628, the pages in
the body of the work being reprinted word for word; though with exceptions.
For example, p. 18 in Ed. 1633 is one line shorter than in Ed. 1628. The
etched plates are entirely different. It has been thought from the
pagination being alike that these two editions were really the same with
different plates, titles, and preliminary matter. But they are really
different. The spacing of the words, letters and lines is different
throughout, and there are different misprints. The watermarks of the paper
also differ.

IV. (THE BERLIN "FACSIMILE" FOLIO OF 1892.) This is a photozincograph
reproduction of the London folio of 1600. It lacks the ink emendations on
pages 11, 22, 47, &c., found in the original, and is wanting also in some
of the asterisks in the margins.

V. (THE AMERICAN TRANSLATION OF 1893.) Frontispiece portrait || _p. i.
title_ WILLIAM GILBERT | OF COLCHESTER, | physician of London, | on the |
Loadstone and Magnetic Bodies, | and on | the great magnet the earth. | A
new Physiology, | demonstrated with many arguments and experiments. | A
translation by | P. Fleury Mottelay, | ... | New York: | John Wiley & Sons,
| 53 East Tenth Street | 1893. || _p. ii_ bears imprint of Ferris Bros.
_Printers_, 326 Pearl Street, New York. || _p. iii._ reduced reproduction
of title of 1600 edition || _verso_ the Gilbert arms || _p. v._
Translator's Preface || _p. ix._ Biographical Memoir || _p. xxxi._ Contents
|| _p. xxxvii._ Address of Edward Wright || _p. xlvii._ Author's Preface.
|| _p. liii._ Explanation of some terms. || pp. 1-358 text of the work. ||
p. 359 reduced reproduction of title of 1628 edition. || p. 360 _ditto_ of
1633 edition. || p. 361 _ditto_ of Gilbert's _De Mundo Nostro_ of 1651. ||
pp. 363 to 368 General Index. || Pages _xxx_, _xlvi_, _lii_, and 362 are
blanks. There are no signatures. Octavo. Diagrams reduced from woodcuts of
the folio of 1600. Some copies bear on title the imprint | London: |
Bernard Quaritch, | 15 Piccadilly. ||

* * * * *

{1} [Illustration]

NOTES ON THE _DE MAGNETE_ OF
DR. WILLIAM GILBERT.

During the work of revising and editing the English translation of _De
M