1, {23} line 33. _Germanis magness_, &
_siegelstein_. The Stettin edition of 1628 reads _Germanis_ MAGNETSTEIN,
_Belgis_ SEYLSTEEN; while that of 1633 reads _Germanis_ MAGNETSTEIN,
_Belgis_ SYLSTEEN.

[58] PAGE 11, LINE 26. Page 11, line 39. In this line the Greek sentence
is, in every known copy of the folio of 1600, corrected in ink upon the
text, [Greek: thales] being thus altered into [Greek: Thales], and [Greek:
apomnemonuousi] into [Greek: apomnemoneuousi]. Four lines lower, brackets
have been inserted around the words (lapidum specularium modo). These ink
corrections must have been made at the printers', possibly by Gilbert's own
hand. They have been carried out as errata in the editions of 1628 and
1633. The "facsimile" Berlin reprint of 1892 has deleted them, however.
Other ink corrections on pp. 14, 22, 38, 39, 47, 130, and 200 of the folio
edition of 1600 are noted in due course.

[59] PAGE 11, LINE 29. Page 11, line 45. _lapis specularis_. This is the
mediaeval name for _mica_, but in Elizabethan times known as talc or
muscovy stone. Cardan, _De Rerum Varietate_ (Basil., 1557, p. 418), lib.
xiiii., cap. lxxii., mentions the use of _lapis specularis_ for windows.

[60] PAGE 11, LINE 31. Page 11, line 46.: _Germanis Katzensilbar_ &
_Talke_.--In the editions of 1628 and 1633 this is corrected to _Germanis_
KATZENSILBER & TALCKE. Goethe, in _Wilhelm Meister's Travels_, calls mica
"cat-gold."

[61] PAGE 12, LINE 30. Page 12, line 35. _integtum_ appears to be a
misprint for _integrum_, which is the reading of editions 1628 and 1633.

[62] PAGE 13, LINE 4. Page 13, line 3. [Greek: mikroge] _seu Terrella_.
Although rounded loadstones had been used before Gilbert's time (see
Peregrinus, p. 3 of Augsburg edition of 1558, or Baptista Porta, p. 194, of
English edition of 1658), Gilbert's use of the spherical loadstone as a
model of the globe of the earth is distinctive. The name _Terrella_
remained in the language. In _Pepys's Diary_ we read how on October 2,
1663, he "received a letter from Mr. Barlow with a terella." John Evelyn,
in his _Diary_, July, 1655, mentions a "pretty terella with the circles and
showing the magnetic deviations."

A Terrella, 4-1/2 inches in diameter, was presented in 1662 by King Charles
I. to the Royal Society, and is still in its possession. It was examined in
1687 (see _Phil. Transactions_ for that year) by the Society to see whether
the positions of its poles had changed.

In Grew'