"In winter, too, the hives should be covered with straw, and subjected to repeated fumigations, with burnt cow- dung more particularly. As this is of kindred origin* with the bees, the smoke produced by it is particularly beneficial in killing all such insects as may happen to breed there, such as spiders, for instance, moths, and wood-worms; while, at the same time, it stimulates the bees themselves to increased activity."