(3) Ten days before the honey flow is expected to begin, put most of the brood into a single hive body, on this a queen excluder, and over this a second hive body with a frame of brood and the queen, the other combs of this set being empty except perhaps a little brood and honey. Nine or ten days later remove the upper story, supply it with a bottom board, and place it close beside the original hive. Destroy queen cells if any are present in the queenless portion which remains on the old stand, give a ripe queen cell, virgin queen, or a young laying queen, and put on the supers. The brood chamber containing the old queen may be used to make increase or its flying bees may be united with the storing colony (p. 31). By any of these methods there is a break of 10 to 15 days in the continuity of brood emergence in the brood chamber left on the old stand and the colonies are requeened with young queens--each a strong factor in swarm control and when combined should with rare exceptions result in no swarming. =REMOVING THE BROOD FROM THE HIVE.= Since removing the brood brings about conditions quite similar to that of natural swarming (p. 28), such a management of the colonies is practically identical with that of natural swarming. The use of the brood that is removed (p. 29), the question of what should be used in the brood chamber instead of the removed brood (p. 32), the contraction of the brood chamber (p. 33), etc., have been discussed under natural swarming and need not be repeated here. While some of the plans using this principle may be applied to all the colonies in the apiary before swarming actually begins, the usual practice is to apply them only to such colonies as are making preparations to swarm. It should not be used on weak colonies, on colonies having a small percentage of sealed and emerging brood and few young bees, on colonies in which the queen is failing, or on any colonies during a very poor season. Under any of these conditions it is usually better to discourage swarming by destroying queen cells (p. 27), by removing one or two frames of brood, or, if some control measure is finally necessary, by requeening such colonies after an interval of queenlessness. On the other hand, for strong colonies having a high percentage of sealed and emerging brood and a good queen the method usually gives excellent results, since by its use the workers, queen, and supers are kept together during the flow. The following are some of the various plans employing this principle of swarm control: