If for any reason the queen should fail to join the bees, and perhaps rarely, when she is among them, they will, after having clustered, return to their old home. The youngest bees will remain in the old hive, to which those bees, if there are any such, which are abroad in quest of stores will return. The presence of young bees on the ground--those with flight too feeble to join the rovers--will always mark the previous home of the emigrants. Soon, in seven or eight days, perhaps rarely a little later, the first queen will come forth from her cell, and in two or three days she will or may lead a new colony forth, but before she does this, the peculiar note, known as the piping of the queen, may be heard. This piping sounds like peep, peep, is shrill and clear, and can be plainly heard by placing the ear to the hive, nor would it be mistaken. It is followed by a lower, hoarser note, made by a queen still within the cell. Some have supposed that the cry of the liberated queen was that of hate, while that by the queen still imprisoned was either of enmity or fear. Never will an after-swarm leave, unless preceded by this peculiar note. At successive periods of one or two days, one, two, or even three more colonies may issue from the old home. These last swarms will all be heralded by the piping of the queen. They will be less particular as to the time of day when they issue, as they have been known to leave before sun-rise, and even after sun-set. The well-known apiarist, Mr. A. F. Moon, once knew a swarm to issue by moon-light. They will, too, as a rule, cluster farther from the hive. The after swarms are preceded by the queen, and in case swarming is delayed, may be attended by a plurality of queens. Berlepsch and Langstroth both saw eight queens issue with a swarm, while, others report even more. These virgin queens fly very rapidly, so the swarm will seem more active and definite in their course than will first swarms. The cutting short of swarming preparations before the second, third, or even the first swarm issues, is by no means a rare occurrence. This is effected by the bees' destroying the queen-cells, and sometimes by a general extermination of the drones, and is generally to be explained by a cessation of the honey yield. Cells thus destroyed are easily recognized, as they are torn open from the side, and not cut back from the end. Swarming out at other times, especially in late winter and spring, is sometimes noticed by apiarists. This is due to famine, mice, or some other disturbing circumstance, which makes the hive intolerable to the bees. CHAPTER IV. PRODUCTS OF BEES; THEIR ORIGIN AND FUNCTION.