I shall endeavour in the following pages to show the proper way in which to collect and preserve insects, especially the lepidoptera and coleoptera.
NETS. — The first thing to be considered is, how to catch your game. This is managed by a "net," not of the construction of those mentioned in Chapter II., but made of a lighter material. They are of various shapes, the professional, or old English pattern, being something of the construction of a "bat-folding" net. It is, in my opinion, a most unsportsmanlike weapon, rapidly going out of date — if not deceased already — and is fitly replaced by the Continental, or "ring"-net, which is now generally used. However, it may, perhaps, be necessary to describe how to make this machine or clap-net — fit only for dealers or exterminators.
Procure two pieces of ash (or beech, as being the lighter wood), each of about 5 ft. in length. With a plane or spokeshave round these up until they taper from 1 in. diameter at bottom to little less than 0.5 in. at top. Now saw each rod into four pieces of 15 in. long, or, for greater strength, but less portability, into three 20 in. pieces. Ferrule these in the manner of fishing-rods, so that each rod joins up to its normal length of 5 ft. At the top of each rod fix a specially-made ferrule, bent or brazed to about the angle of 45 deg.
Next get two pieces of cane, each 15 in. in length, and of sufficient diameter to fit tightly into the bent angle of the top piece; bore the top ends of these canes and tie them loosely together. If the rods with canes attached are now laid down, with the ends of the canes pointing inwards, it will be seen that they assume somewhat the shape of the gable-end of a house, which would fold in on itself by means of the cord acting as a hinge.
Now get some stout black holland, which sew all round the rods to within 6 in. of the ends of the bottom joints, so as to fit loosely to allow them to be inserted or withdrawn at pleasure. When the cane ends are tied together, cut a hole on the top of the holland, so that you may be enabled to untie them when required. This hole, for greater neatness and strength, should be "button-holed" around. To this framework of holland attach at the bottom some strong black tape, which pass through the holes previously bored in the last joints of the rods within 6 in. of their ends. This prevents the net slipping either up or off when in use.
The material of the net itself is the next consideration. This is of "leno," a cheap kind of strong gauze. Procure as many yards of this as will make a loose bag when sewn on and around the framework of holland, when the net-rods are folded together; bagging especially at the bottom part, so as to fall down some inches when the net is held up.
You have now a portable bag, or "clap-net," of over 5 ft. high by 2 ft. 6 in. or more wide. To use this machine, you simply stretch it to its full extent and run out in front of any insect you wish to stop, clapping it smartly together and securing your captive in the bag formed when the net is shut. Some little practice is needed to do this neatly, especially with such dashing, fast-flying moths as the "Emperor," or "Bee Hawks." Laying down the net, and confining the insect to one part, is the best way to get it out uninjured. To take this net to pieces, the tapes at the bottom and the cords at the top require only to be loosened, when the rods can be drawn out, unjointed, and slipped into a bag or a pocket specially sewn in the breast of the coat to receive them.
When portability is not a desideratum, the rods may be easily made of green hazel (or nut tree) wands, bent and secured into shape and dried in the sun, or up a chimney, or otherwise a strong cane may be steamed (or boiled) and dried in like manner; few people, I opine, however, care to carry out from a town two long roughly-shaped rods of 5 ft. or 6 ft. long in this clumsy fashion.
I did not wish to describe this net at all, as it is, in my opinion, a most unsportsmanlike or un-entomological weapon, as nothing can escape it. Indeed, a friend of mine not inaptly describes it as the "gobbler; " and it does really "gobble" up any insect it is used against.
The continental or ring net is now generally used. For one variety a tin or brass Y is made, into the bottom arm of which a stick fits. The spreading arms serve to hold a cane, which is bent round, and each end thrust in. A net of gauze or leno, is attached. My objection to this net is that the cane often slips out of the arms of the Y, which latter also breaks at the junction; added to which it takes up a great deal of room, not being very easily doubled without the risk of breaking. The points which a net should possess in perfection are — first, strength; secondly, portability; and, thirdly, adaptability to more than one use. I shall endeavour to show by the next two figures my ideas of a perfect net.