Notes on Collecting and Preserving Natural-History Objects
Science
Notes on Collecting and Preserving Natural-History Objects
Botanical specimens -- Collection and preservation; Zoological specimens -- Collection and preservation
Sugaring is the next attraction, and a very important one it is.
"Sugar" may be prepared by boiling up equal quantities of coarse
"foots" sugar and treacle in a sufficient quantity of stale beer,
a small quantity of rum being added previous to use, and also, if
considered advisable, a flavouring of jargonelle pears, anise-seed, or
ginger-grass. This mixture should be applied by means of a small paint
brush to the trunks of trees, to foliage, flowers, tufts of grass, or
indeed to any object which may present a suitable surface; for in some
localities we are put to shift to know where to spread our sweets. This
operation should be performed just before dusk, and soon afterwards
the baited spots should be visited and, by the aid of a lantern gently
turned on them, examined, a net being held beneath the while. The
best form of net for the purpose is formed by socketing two paragon
wires into a Y-piece and connecting their diverging extremities by a
piece of catgut, as shown in Fig. 15. The catgut, being flexible, will
adapt itself (see the dotted line) to the surface of a tree trunk when
pressed against it. With regard to insects captured at sugar, they
are usually remarkably quiet, and may be boxed without difficulty,
and, with a few exceptions, may be conveyed home in the boxes, care
being taken to let each have a separate apartment. The boxes should be
strengthened with strips of linen pasted round the joints, as shown in
Fig. 16, otherwise accidents may occur, particularly on wet evenings
or on rough ground. The skittish individuals may be best captured by
means of the sugaring drum, of which a cut is given in Fig. 17. This
apparatus consists of a cylinder, one end of which is covered with
gauze, the other provided with a circular valve, which works in a slit.
For use, the valve is opened and the cylinder placed over the insect,
which naturally flies towards the gauze; then the valve is closed, the
corked piston, shown at the upper part of the cut, placed against it,
the valve re-opened, the piston pushed up to the gauze, the insect
pinned through the gauze, and the piston withdrawn with the insect
transfixed to it.
[Illustration: Fig 17. Sugaring Drum.]
[Illustration: Fig. 18. Cyanide Bottle and Ferrule.]
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