The blacksmith fly, is so called from its making a noise resembling in sound the striking on iron. In the centre of its back is a projecting horny point, and a crevice of the same nature on the hind part of the head, near the shoulders, which being struck together by a jerk of the head and body, make a tinkling noise, that may be heard at a considerable distance; and so elastic is the membrane which joins the head and body together, that, if the insect is laid on its back, it will spring to a tolerable height upwards, and fall directly on its legs. It differs very little from the beetle in shape or size, excepting in its elastic powers, and making so singular a noise. The fire fly is a wonderful insect, for it has a luminous quality in its head (above the eyes) under each wing, and in its tail; which, when the insect is flying, has the appearance of so many lights of candles moving in the air: or, the lights of a coach or post-chaise in a dark night, travelling towards you at a brisk rate. Some of these flies are as big as the top-joint of a man’s thumb, others are much smaller; and the latter have that luminous quality only in their tails. They have a charming effect on the eye at night in the groves of the woods, where they are seen flying in all directions, like so many thousand sparkles of fire; forming one of the grandest spectacles of the kind that can be conceived, in Dominica’s woods “that nightly shine with insect lamps.” The larger sort are often caught for the novelty of the light they give; if two or three of them are put into a glass, placed in a dark room, you may see distinctly any object there; or by holding a book close to the glass in which they are, you may see plainly to read the smallest print. There is another quality remarkable in the fire flies, which is, that several of them being killed and mashed together will produce the same effect, and be as visible in letters marked out on the walls of a dark room, as if done with artificial phosphorus; and this for a considerable time after the flies are dead. The loggerhead fly is a species of the moth, from which it differs only in the uncommon largeness of its head, and a singular quality of transparency in its body; which latter is very remarkable, for placing this fly near to the light of a candle, you may plainly distinguish every part of its vitals, and distinctly count every movement of them. The Spaniard fly and free-mason fly are both of the wasp kind, but they differ from each other in size, shape, and also in the substance and curious manner of making their nests. The first is of the shape of a small bee, and builds its nest of a waxy matter, in the form of a small flat button full of holes, which it suspends by a silky ligament to the cielings of houses, or to the boughs of trees, where it has the benefit of the wind to vibrate to and fro.