Note 7 — NATURAL HISTORY OF THE ITALIAN YELLOW ALP-BEE. (Apis helvetica.)

Here, too, a wire-grating may be fixed before the fly-hole, large enough to permit free entrance to the bees, but too narrow for drones; this will keep the hive pure. Of course, as soon the queen makes her mating-flight, the hive is carried, in the evening, after sunset, to the place where the pure Italians are until the mating is over.