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Gentleman's Magazine 1794 p.326
A NATURALIST'S RAMBLE IN THE NORTH.
(Concluded from p.113).
AFTER leaving Levens, the park, and river, we soon reached
Heversham. This village presents the Malva Sylvestris
to the North country Naturalist; a plant which he considers
as a botanical acquisition. We also picked up by the way the
Bromus Madritensis, and the Convulvulus
Arvensis.
Nothing more worth recording occurred until we came to the
junction of the Bela with the Kent on the Sands. Here the
thermometer, placed in the fresh-water of the channel at
eight in the evening, stood at 60°, with which
observation we closed the labour and recreation of the day,
intending to renew them early the next. The amusements of
our walk were undoubtedly many, but it could be called
fatiguing, as the length of it did not exceed eight miles.
August 2. In pursuance of our last night's resolution, we
were on the sands soon after five in the morning. The days
was fine, and we determined to follow the shore in order to
pick up what curiosities might happen to fall in our way.
But it soon appeared that our journey had not been well
timed; for, the tides were neap, and the gulls had cleared
the deserted channel of the greatest part of the marine
animals that are found in it at the time of spring-floods.
These sands are skirted on both sides with calcareous rocks;
those on the East side, which bound the shore we examined,
are frequently high and naked, and run in a zigzag line;
their direction is nearly from North to South as far as
Arnside, but afterwards it inclines considerable to the
East, whiile the opposite coast continues in the former
course, or nearly so; thus the width of the channel is
gradually enlarged. The strata are for the most part well
formed; but the rocks are, in some places South-east of
Arnside, composed of mis-shapen masses, not at all
stratified. This lofty bank of limestone abounds with
petrifactions, principally of Lithophyta; but the
petrified valves of a species of Pinna are sometimes
found in it, as well as those of the Cardium Edule
and other bivalves. The joints of the strata are in
some places stained with a red substance, proceeding from
the blood-stone which they contain. This mineral contains
much oxyd of iron; its colour is reddish brown; its specific
gravity 4.992; one surface is generally convex, the other is
less, and concave; the sides are for the most part marked
with converging fibres. Another uncommon fossil is found
here, the Stirium Marmoreum of Linnaeus, or fibrous
limestone; its specific gravity is 2.728; fire converts it
into lime; it disolves in the vitriolic, marine, and nitrous
acids, and contains carbonic acid gas. We heard that variety
of the Motacilla Trochitus, called in Westmorland a
Strawsmear, singing in a woody declivity close to the beach,
after the same bird had been silent for more than three
weeks in the interrior part of the country. It weighs 6 1/4
dwts. The bill is slender, nearly equal; the tongue
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