na scribit) proprium hujusce
ferrei pharmaci antidotum, est lapis magnes drachmae pondere potus, ex
mercurialis, vel betae succo."

Serapio, in his _De Simplicibus Medicinis_ (Brunfels' edition, Argentorati,
1531), p. 264, refers to Galen's prescription of iron scoriae, and under
the article _de lapide magnetis_, p. 260, quotes Dioscorides as follows:
"Et uirtus huius lapidis est, ut quado dantur in potu duo onolosat ex eo
c[~u] melicrato, laxat humores grossos."

The original passage in Dioscorides, _De Materia Medica,_ ch. 147
(Spengel's edition of 1829) runs: "[Greek: Tou de magnetou lithou aristos
estin ho ton sideron eucheros helkon, kai ten chroan kuanizon, puknos te
kai ouk agan barus. Dunamin de echei pachous agogon didomenos meta
melikratou triobolou baros; enioi de touton kaiontes anti haimatitou
pipraskousin.]."

In the Frankfurt edition of Dioscorides, translated by Ruellius (1543), the
passage is:

"Magnes lapis optimus est, qui ferrum facile trahit, colore ad coeruleum
uergente, densus, nec admodum gravis. Datur cum aqua mulsa, trium obolorum
pondere, ut crassos humores eliciat. Sunt qui magnetem cremat[=u] pro
haematite vendant...."

In the _Scholia_ of Joannes Lonicerus upon Dioscorides _In Dioscoridae {31}
Anazarbei de re medica libros a Virgilio Marcello versos, Scholia nova,
Ioanne Lonicero autore_ (Marburgi, 1543, p. 77), occurs the following:

"_De recremento ferri._ Cap. XLIX.

"[Greek: Skoria siderou]. scoria vel recrementum ferri. Quae per ignem a
ferro et cupro sordes separantur ac reijciuntur, et ab aliis metallis
[Greek: skoria] uocantur. Omnis scoria, maxime uero ferri exiccat. Acerrimo
aceto macerauit Galenus ferri scoriam, ac deinde excocto, pharmacum efficax
confecit ad purulentas quae multo tempore uexatae erant, aures, admirando
spectantium effectu. Ardenti scoria uel recrementum [Greek: helkusma],
inquit Galenus."

See also the _Enarrationes eruditissimae_ of Amatus Lusitanus (Venet.,
1597), pp. 482 and 507, upon iron and the loadstone.

[98] PAGE 36, LINE 27. Page 36, line 29. _eijcitur_ for _ejicitur_.

[99] PAGE 37, LINE 18. Page 37, line 22. _ut Cardanus
philosophatur._--Cardan's nonsense about the magnet feeding on iron is to
be found in _De Subtilitate_, lib. vii. (Basil., 1611, p. 381).

[100] PAGE 38, LINE 4. Page 38, line 7. _ferramenta ... in usum
navigantium._--Compare Marke Ridley's _A Short Treatise of Magneticall
Bodies and Motions_ (Lond., 1613), p. _a2_ in t