Note 1 — Chapter II · FERNANDO NORONHA; TERCEIRA; TAHITI, ETC.
Reading edition
Spallanzani, Dolomieu, and Hoffman have described similar cases in the Italian volcanic islands. Dolomieu says the iron at the Panza Islands is redeposited in the form of veins (p. 86 “Mémoire sur les Isles Ponces”). These authors likewise believe that the steam deposits silica: it is now experimentally known that vapour of a high temperature is able to dissolve silica.