unfortunate victims evidently perceive their danger, for they are never, at this time, seen resting in one place, but darting in and out of the hive with the utmost precipitation, as if in fear of being seized." Their destruction is thought, by some, to be caused by their being harassed until they quit the hive; but Huber says he ascertained that the death of the drones was caused by the stings of the workers. Supposing the drones come forth in May, which is the average period of their being hatched, their destruction takes place somewhere about the commencement of August, so that three months is the usual extent of their existence; but should it so happen that the usual development of the queen has been retarded, or that the hive has in any case been deprived of her, the massacre of the drones is deferred. But in any case, the natural term of the life of drone bees does not exceed four months, so that they are all dead before the winter, and are not allowed to be useless consumers of the general store. The Worker Bee.--The working bees form, by far, the most numerous class of the three kinds contained in the hive, and least of all require description. They are the smallest of the bees, are dark brown in colour or nearly black, and much more active on the wing than are either drones or queens. The usual number in a healthy hive varies from twelve to thirty thousand; and, previous to swarming, exceeds the larger number. The worker-bee is of the same sex as the queen, but is only partially developed. Any egg of a worker-bee,--by the cell being enlarged, as already described, and the "royal jelly" being supplied to the larva,--may be hatched into a mature and perfect queen. This, one of the most curious facts connected with the natural history of bees, may be verified in any apiary by most interesting experiments, which may be turned to important use. With regard to the supposed distinctions between "nursing" and working bees, it is now agreed that it only consists in a division of labour,--the young workers staying at home to feed the larvæ until they are themselves vigorous enough to range the fields in quest of supplies. But, for many details of unfailing interest, we must again refer our readers to the standard works on bees that have already been named. The Eggs of Bees.--It is necessary that some explanation should be given as to the existence of the bee before it emerges from the cell.