n to
those cited by Tulasne. Of these, _Agaricus lampas_, and some others,
are found in Australia.[D] In addition to the _Agaricus noctileucus_,
discovered by Gaudichaud, and the _Agaricus igneus_ of Rumphius, found
in Amboyna, Dr. Hooker speaks of the phenomenon as common in Sikkim,
but he seems never to have been able to ascertain with what species it
was associated.

Dr. Cuthbert Collingwood has communicated some further information
relative to the luminosity of a species of _Agaricus_ in Borneo
(supposed to be _A. Gardneri_), in which he says, "The night being
dark, the fungi could be very distinctly seen, though not at any great
distance, shining with a soft pale greenish light. Here and there
spots of much more intense light were visible, and these proved to be
very young and minute specimens. The older specimens may more properly
be described as possessing a greenish luminous glow, like the glow of
the electric discharge, which, however, was quite sufficient to define
its shape, and, when closely examined, the chief details of its form
and appearance. The luminosity did not impart itself to the hand, and
did not appear to be affected by the separation from the root on which
it grew, at least not for some hours. I think it probable that the
mycelium of this fungus is also luminous, for, upon turning up the
ground in search of small luminous worms, minute spots of light were
observed, which could not be referred to any particular object or body
when brought to the light and examined, and were probably due to some
minute portions of its mycelium."[E] The same writer also adds, "Mr.
Hugh Low has assured me that he saw the jungle all in a blaze of light
(by which he could see to read) as, some years ago, he was riding
across the island by the jungle road; and that this luminosity was
produced by an Agaric."

Similar experiences were detailed by Mr. James Drummond in a letter
from Swan River, in which two species of Agaric are concerned. They
grew on the stumps of trees, and had nothing remarkable in their
appearance by day, but by night emitted a most curious light, such as
the writer never saw described in any book. One species was found
growing on the stump of a _Banksia_ in Western Australia. The stump
was at the time surrounded by water. It was on a dark night, when
passing, that the curious light was first observed. When the fungus
was laid on a newspaper, it emitted by night a phosphorescent light,
enabling p