18
_
man’s INFLUENCE ON snnmi—rrsnns.
mussel—bed, f0r instance, has a marked inuence on the
ance of the pelagic larval mussels, just as the vicinity of a
of oysters or of clams produces similar effects,
In ne
'
Weather many of these molluscan larvæ, rising from the
bottom, sport at the surface, while by—and—by as they get—
'
older they leave the upper regions of the water to descend—
either to bore in the sand or other medium or take up their—
habitat on the bottom.
The shes thus, as in the case of the
_
crustaceans, have a double opportunity—rst on their '
r1smg—
and again on their descent.
The pelagic mollusks, from
enormous numbers and wide distribution, would alone
a
great oceanic fauna of predatory animals, and, as they
'
on
microscopic plants and similar minute food, they
.
illustrate the close connection between the two kmgdomsî
Moreover as food for young shes they not only give
_
but afford the necessary variety in dietary.
,
‘
_
_
For ages man has gathered the sedentary and creepmg
Shell—shes, such as mussels,--cockles, and whelks, for food and”
…
hait, often without the slightest restriction, as in the case of
whelk and limpet, yet extinction has not ensued, not even 1
_
the much abused mussel, which has_suffered on the one hand:
_
from reckless shing and on the other from the very varied sup-_
:“
positions of sherinen, mussel—merchants, and
Some
'
’ _
”
years ago an agitation was raised about mussels. Pamphlets
j ‘ _* gÇ. ä_f
the newspapers of the day kept attention directedto the u1gent
for mussel—reform in view of the decrease of the supply
under Lord Tweedinouth (then Mr Maryonbanks)°
was appointed by Parliament to investigate the subject. The
committeemade
giving the
regulate the various mussel—beds and pmven—
_WasteVaylittlé“changeg
has ensued in regard tothe
dlSî311lfmfüloD %frŸîcrëàsé ôf?thermusseh ad it may be surposed
latethesurrlyafmusselsfazthisa’moment is sufcient: The
îsendœmPames0f000kïegatherersalestdaytoasandY
âatandth18f0rhundœds0fyearS—W?outexhaustmgthe
_
man’s INFLUENCE ON snnmi—rrsnns.
mussel—bed, f0r instance, has a marked inuence on the
ance of the pelagic larval mussels, just as the vicinity of a
of oysters or of clams produces similar effects,
In ne
'
Weather many of these molluscan larvæ, rising from the
bottom, sport at the surface, while by—and—by as they get—
'
older they leave the upper regions of the water to descend—
either to bore in the sand or other medium or take up their—
habitat on the bottom.
The shes thus, as in the case of the
_
crustaceans, have a double opportunity—rst on their '
r1smg—
and again on their descent.
The pelagic mollusks, from
enormous numbers and wide distribution, would alone
a
great oceanic fauna of predatory animals, and, as they
'
on
microscopic plants and similar minute food, they
.
illustrate the close connection between the two kmgdomsî
Moreover as food for young shes they not only give
_
but afford the necessary variety in dietary.
,
‘
_
_
For ages man has gathered the sedentary and creepmg
Shell—shes, such as mussels,--cockles, and whelks, for food and”
…
hait, often without the slightest restriction, as in the case of
whelk and limpet, yet extinction has not ensued, not even 1
_
the much abused mussel, which has_suffered on the one hand:
_
from reckless shing and on the other from the very varied sup-_
:“
positions of sherinen, mussel—merchants, and
Some
'
’ _
”
years ago an agitation was raised about mussels. Pamphlets
j ‘ _* gÇ. ä_f
the newspapers of the day kept attention directedto the u1gent
for mussel—reform in view of the decrease of the supply
under Lord Tweedinouth (then Mr Maryonbanks)°
was appointed by Parliament to investigate the subject. The
committeemade
giving the
regulate the various mussel—beds and pmven—
_WasteVaylittlé“changeg
has ensued in regard tothe
dlSî311lfmfüloD %frŸîcrëàsé ôf?thermusseh ad it may be surposed
latethesurrlyafmusselsfazthisa’moment is sufcient: The
îsendœmPames0f000kïegatherersalestdaytoasandY
âatandth18f0rhundœds0fyearS—W?outexhaustmgthe