.
rss
THE SEAS
.
in
countless
numbers
in
the
sea
gives rise
to
that
general phosphorescence, or “burning of the sea” as it
was called by earlier observers, which has probably… been
notiCed by everyone who has had much experience of the
sea by night; Noctiluca is especially abundant in the
plankton during late summer and autumn and in this
season the prow of a boat cuts a silvery line through the
water—often of such brilliancy that even in the dead of
night 3. newspaper can be read by the light it casts.
N0ctiluca itself is pinkish in colour and may be thrown
upon the shore in such numbers as to form a coloured layer
along the beach, the shore water resembling
“
thick tomate
*soup.”
,
According to Murray and Hj ort, the.Norwegian shermen
,
distinguish between
“
dead phosphorescence
”
and “ sh
phosphorescenCe,” the former
“
the stars in a
clear sky, myriads of minute nearly invisible points emitting
a soin”tillating light,
increasing, now decreasing, in
intensity
”
and being produced by Noctiluca and similar
protozoa. -The second type, the result of rushing move'
ments of large sh or squids which cause the phosphorescent
'
animals momentarily to glow, is more like a dull
of
'
light
lights upand then dies out completely.
-
»
Many f jellysh have the power of general: luminescence
-
_
appearing as round halls of White're in the sea. Those
‘
seen and described by travellers in the warmer seas are
often of great size, and the late ProfessOr Herdman describes
how, when at anchor on the pearl banks, of the— Gulf of
Manaar, “ in an intensely dark night, I saw the black sea
around us in all directions lit up by an innumerable
_
asSemblage ofwh‘at -lo’oked like globes of —re,uwaxing and -- _. =
'
waning in brightness,all simultaneously glowing and then
7
fadi‘ng aWay into darkness, and after a few seconds light—
‘ingï up once more. ,This periodic display continued _for
rss
THE SEAS
.
in
countless
numbers
in
the
sea
gives rise
to
that
general phosphorescence, or “burning of the sea” as it
was called by earlier observers, which has probably… been
notiCed by everyone who has had much experience of the
sea by night; Noctiluca is especially abundant in the
plankton during late summer and autumn and in this
season the prow of a boat cuts a silvery line through the
water—often of such brilliancy that even in the dead of
night 3. newspaper can be read by the light it casts.
N0ctiluca itself is pinkish in colour and may be thrown
upon the shore in such numbers as to form a coloured layer
along the beach, the shore water resembling
“
thick tomate
*soup.”
,
According to Murray and Hj ort, the.Norwegian shermen
,
distinguish between
“
dead phosphorescence
”
and “ sh
phosphorescenCe,” the former
“
the stars in a
clear sky, myriads of minute nearly invisible points emitting
a soin”tillating light,
increasing, now decreasing, in
intensity
”
and being produced by Noctiluca and similar
protozoa. -The second type, the result of rushing move'
ments of large sh or squids which cause the phosphorescent
'
animals momentarily to glow, is more like a dull
of
'
light
lights upand then dies out completely.
-
»
Many f jellysh have the power of general: luminescence
-
_
appearing as round halls of White're in the sea. Those
‘
seen and described by travellers in the warmer seas are
often of great size, and the late ProfessOr Herdman describes
how, when at anchor on the pearl banks, of the— Gulf of
Manaar, “ in an intensely dark night, I saw the black sea
around us in all directions lit up by an innumerable
_
asSemblage ofwh‘at -lo’oked like globes of —re,uwaxing and -- _. =
'
waning in brightness,all simultaneously glowing and then
7
fadi‘ng aWay into darkness, and after a few seconds light—
‘ingï up once more. ,This periodic display continued _for