The deer-fly will bite and bite hard enough to hurt. It will drive its

sharp mandibles into your skin with such force as to take out a bit of

the flesh, sometimes causing the blood to flow, but the bite does not

seem particularly poisonous, though you feel it at the time and it

generally raises a lump on the flesh. The deer-fly belongs to the

family of gadflies. It is larger than a house-fly and its wings stand

out at right angles to its body. It will not trouble you much except in

the woods.