II. (THE STETTIN QUARTO OF 1628.) _Four preliminary unnumbered leaves, viz._ (1) _Bastard title_ GULIELMI GILBERTI | Tractatus | DE MAGNETE || _verso_ blank; (2) _Engraved title._ TRACTATVS | Siue | PHYSIOLOGIA NOVA | DE MAGNETE, | MAGNETICISQVE CORPO- | RIBVS ET MAGNO MAGNETE | tellure Sex libris comprehensus | ã | Guilielmo Gilberto Colcestrensi, | Medico Londinensi | ... Omnia nunc diligenter recognita & emen- | datius quam ante in lucem edita, aucta & figu- | ris illustrata operâ & studio | Wolfgangi LOCHMANS I.U.D. | & Mathemati: | Ad calcem libri adjunctus est Index Capi- | tum Rerum et Verborum locupletissimus | EXCVSVS SEDINI | Typis Gotzianis Sumptibus | _Ioh: Hallervordij._ | Anno MDC.XXVIII || _verso_ blank; (3) Præfatio; (4) Amicorum Acclamationes (verses) || _verso_ blank. _Sig._ A Ad Lectorem Candidum. _Sig._ A2 _verso_ Ad Gravissimum Doctissimum[=q] Virum. _Sig._ B2 Verborum quorundam interpretatio. _Verso_ blank, followed by twelve engraved plates numbered I. to XII. _Sig._ B3 is numbered as p. 1, and begins GVILIELMI GILBERTI | DE MAGNETE. | LIBER I. _Sig._ C _begins as p. 5_; _Sig._ D as p. 13; and so forth. The collation therefore is: 4 ll. unnumbered, ABCDEFGHIKLMNOPQRSTVXYZAaBbCcDdEeFfGgHhIiKkLlMm, _all fours. Pagination ends on_ p. 232, _which has Sig._ H_3 _in error for_ Hh_3, _being the end of the text. Verso of_ Hh_3 blank. Index capitum _begins fol._ [Hh_4] _and_ with Index Verborum _continues to verso of_ Mm_3. _Last leaf_ [Mm_4] _contains Errata, and instructions to binder to place plates: verso_ blank. _Quarto. Woodcut initials and diagrams. Without any colophon, printer's Mark, or date at end._ In some copies the engraved title differs, having the words _Ioh: Hallervordij._ replaced by the word _Authoris_.

{ iij} III. (THE STETTIN QUARTO OF 1633.) _Four preliminary unnumbered leaves_, viz., (1) _title._ Tractatus, sive Physiologia Nova | de | MAGNETE, | Magneticisq; corporibus & magno | Magnate tellure, sex libris comprehensus, | a GUILIELMO GILBERTO Colce- | strensi, Medico Londinensi. | ... Omnia nunc diligenter recognita, & emendatius quam ante | in lucem edita, aucta & figuris illustrata, opera & studio D. | WOLFGANGI LOCHMANS, I.U.D. | & Mathematici. | Ad calcem libri adiunctus est Index capitum, Rerum & Verborum | locupletissimus, qui in priore æditione desiderabatur | SEDINI, | Typis GOTZIANIS. | ANNO M.DC. XXXII. || _verso_ blank; (2) Præfatio; (3) Amicorum acclamationes (verses) || _verso_ Claudianus de Magnete (verses); (4) _ibid._ _Sig._ A Ad Lectorem Candidum. _Sig._ A2 _verso_ Ad Gravissimum Doctissimumq. Virum. _Sig._ B2 Verborum quorundam interpretatio; _verso_ blank. _Sig._ B3 is numbered as p. 1, and begins GVILIELMI GILBERTI | DE MAGNETE. | LIBER I. _Sig._ C begins as p. 5; _Sig._ D as p. 13; and so forth. The Collation therefore is: 4 _ll._ unnumbered, A _to_ Mm, _all fours_. Pagination _ends on p. 232, which bears Sig._ H3 _in error for_ Hh3. _Verso of Sig._ Hh3. Errata. Index capitum _begins_ Hh4, _and with_ Index Verborum _extends to verso_ of Mm3. _The last leaf_ [Mm4] _bears the Instructions to binder, with verso_ blank. _There is no colophon, printer's Mark, or date at end. Quarto. Woodcut initials, and diagrams. Twelve etched plates of various sizes inserted._

On the magnet, magnetick bodies also, and on the great magnet the earth — Part 121