BOOK XII . 585 … A — Mouth of the tunnel . B — Trough . C — Tanks . D — Little trough . the others , for which reason crystals take the first place . From these , when pounded , the most excellent transparent glass was made in India , with which no other could be compared , as Pliny relates . The second place is…
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![An illustration from Georgii Agricolae De re metallica : libri XII. Quibus officia, instrumenta, machinae, ac omnia deni[que] ad metallicam spectantia, non modo luculentissimè describuntur, sed & per effigies, suis locis infertas, adiunctis latinis, germanicis [que] appellationibus ita ob oculos ponuntur, ut clarius tradi non possint. ; Eiusdem De animantibus subterraneis liber, (1556)](https://img.insideoutlibrary.com/img/200/ia-gri_000033125008455038-476-300.webp)
![An illustration from P. Ouidii Metamorphosis : cum luculentissimis Raphaelis Regij enarrationibus : quibus cũ alia q̃da[m] ascripta sunt : q̃ in exemplarib[us] antea impressis nom inueniuntur : tum eorum apologia : q̃ fuerant a quibusdam reprehensa (1517)](https://img.insideoutlibrary.com/img/200/ia-pouidiimetamorph00ovid-41-0.webp)
