a discourse on the finding of veins. The third book deals with veins and
stringers, and seams in the rocks. The fourth book explains the method of
delimiting veins, and also describes the functions of the mining officials.
The fifth book describes the digging of ore and the surveyor's art. The
sixth book describes the miners' tools and machines. The seventh book is
on the assaying of ore. The eighth book lays down the rules for the work of
roasting, crushing, and washing the ore. The ninth book explains the
methods of smelting ores. The tenth book instructs those who are studious
of the metallic arts in the work of separating silver from gold, and lead from
gold and silver. The eleventh book shows the way of separating silver from
copper. The twelfth book gives us rules for manufacturing salt, soda, alum,
vitriol, sulphur, bitumen, and glass.
Although I have not fulfilled the task which I have undertaken, on account
of the great magnitude of the subject, I have, at all events, endeavoured to fulfil
it, for I have devoted much labour and care, and have even gone to some
expense upon it ; for with regard to the veins, tools, vessels, sluices, machines,
and furnaces, I have not only described them, but have also hired illustrators
to delineate their forms, lest descriptions which are conveyed by words
should either not be understood by men of our own times, or should cause
difficulty to posterity, in the same way as to us difficulty is often caused by
many names which the Ancients (because such words were familiar to all of
them) have handed down to us without any explanation.
I have omitted all those things which I have not myself seen, or have
" as perhaps to have been used in the antediluvian age. Of this opinion was Zosimus the
" Panopolite, whose Greek writings, though known as long as before the year 1550 to George
" Agricola, and afterwards perused . . . . by Jas. Scaliger and Olaus Borrichius,
" still remain unpublished in the King of France's library. In one of these, entitled, ' The
" Instruction of Zosimus the Panopolite and Philosopher, out of those written to Theosebeia,
" etc. . . .' Olympiodorus was an Alexandrian of the 5th Century, whose writings were largely
commentaries on Plato and Aristotle ; he is sometimes accredited with being the first to
describe white arsenic (arsenical oxide). The full title of the work styled "Stephanus to
Heracleus Caesar," as published in Latin at Padua in 1573, was " Stephan of Alexandria, the
" Universal Philosopher and Master, his nine processes on the great art of making gold and
" silver, addressed to the Emperor Heraclius." He, therefore, if authentic, dates in the
7th Century.
To the next class belong those of the Middle Ages, which we give in order of date.
The works attributed to Geber play such an important part in the history of Chemistry and
Metallurgy that we discuss his book at length in Appendix B. Late criticism indicates that this
work was not the production of an 8th Century Arab, but a compilation of some Latin scholar
of the 12th or 13th Centuries. Arnold de Villa Nova, born about 1240, died in 1313,
was celebrated as a physician, philosopher, and chemist ; his first works were published
in Lyons in 1504 ; many of them have apparently never been printed, for references may be
found to some 18 different works. Raymond Lully, a Spaniard, born in 1235, who
was a disciple of Arnold de Villa Nova, was stoned to death in Africa in 1315. There are
extant over 100 works attributed to this author, although again the habit of disciples of writing
under the master's name may be responsible for most of these. John Aurelio Augurello was
an Italian Classicist, born in Rimini about 1453. Thework referred to, Chrysopoeia et Gerontica
is a poem on the art of making gold, etc., published in Venice, 1515, and re-published
frequently thereafter ; it is much quoted by Alchemists. With regard to Merlin, as satisfactory an account as any of this truly English magician may be found in Mark Twain's
" Yankee at the Court of King Arthur." It is of some interest to note that Agricola omits
from his list Avicenna (980-1037 A.D.), Roger Bacon (1214-1294), Albertus Magnus (11931280), Basil Valentine (end 15th century ?), and Paracelsus, a contemporary of his own.
In De Ortu et Causis he expends much thought on refutation of theories advanced by Avicenna
and Albertus, but of the others we have found no mention, although their work is, from a
chemical point of view, of considerable importance.
