I am sure now, you will excuse my mentioning what is said of this great
man _below_; but speaking of light, I must not omit to mention, that
there are men of veracity now living in this town, who affirm, that they
have seen, upon opening some of the ancient monuments here, the eternal
lamps burning. The number of testimonies we have of this kind puts the
matter past a doubt, that a flame has appeared at the lip of these
lamps when first the tombs have been opened; one was found, you know, on
the _Appian_ way, in the tomb of _Cicero_'s daughter, which had burnt
more than seventeen centuries; another at _Padua_, which had burnt eight
hundred years, and which was found hanging between two little phials,
one of gold, the other of silver, which were both quite full of liquor,
extremely clear, as well as many others; but as it is impossible to
believe that flame can exist, and not consume that which feeds it, is it
not more natural to conclude that those lamps, phials, &c. contained a
species of phosphorus, which became luminous upon the first opening of
the tombs and the sudden rushing in of fresh air; and that the reverse
of what is generally supposed is the fact, that they are not
extinguished, but illuminated by the fresh air they receive? I have seen
several of these lamps here and elsewhere, most of which are of baked
earth.
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