Copper becomes covered with verdigris more quickly when
cleaned than when neglected, unless it is well rubbed with
oil. It is said that the best method of preserving it is
with a coating of tar. The custom of making use of copper
for monuments, which are intended to be perpetuated, is of
very ancient date: it is upon tablets of brass that our public
enactments are engraved.
The Natural History. Pliny the Elder. John Bostock, M.D., F.R.S. H.T. Riley, Esq., B.A. London. Taylor and Francis, Red Lion Court, Fleet Street. 1855.
An XML version of this text is available for download,
with the additional restriction that you offer Perseus any modifications you make. Perseus provides credit for all accepted
changes, storing new additions in a versioning system.