deduced from actual observation
of existing strata. - The same
person appears in the fourth
Dialogue & in the other two
& in all of them is the
principal speaker. In the
fourth which is commenced
at the falls of the Traun
& concluded in the cavern
of the Madelina , near Saltz
burgh , the conversation is
partly relative to that
singular animal the
Proteus anguinus, partly
on the subject of respiration
& animal heat & in
part on the nature of
the soul & on the destiny
of man after death &