It is the heat which causes the working-Bees to deposit their pollen in the immediate vicinity of the seat of nature. This pollen, which is called by some writers Bee-bread, is gathered and deposited for the special purpose of supporting the young larvæ, while helpless insects, or babies, as it were, in the hive. Combined with heat, it is this material which discolours the much admired works of the Bees; it is this which also makes the wax and honey yellow: besides where this pollen is deposited by the Bees, there, or in that part of the hive, will the Queen lay her eggs,--and there of course propagate her species. And as animal nature advances to perfection, so rises the interior temperature of the hive, until an almost suffocating heat obliges the Bees to leave their home. This heat extends itself to the most remote parts of their domicil; and were it not for the influence of ventilation in the end-boxes, a discolouration of their beautiful works would also be extended through the hive, and the Queen would lay her eggs promiscuously as she does in the cottage-hive. But this mischief is corrected by ventilation: can then any reasonable man deny its powerful and useful effects in the management of Bees? The Queen-Bee is but seldom seen by the most acute observer; she loves to propagate her young in secrecy, at the regular temperature of the hive at her own birth. If she can possibly avoid it, she will not lay her eggs where man can overlook and examine her movements; consequently the ventilation in the side-boxes prevents her extending her works of nature beyond the limits of her native hive. As soon as she feels a cooling change of temperature, she immediately withdraws to her native clime, and leaves her working subjects to store the beautifully white combs with the purest crystal sweet. Bat, were the Queen permitted, as she is in the piling system, as well as in the cottage-hive, to follow her subjects through the whole hive, with one and the same temperature throughout, she would most certainly propagate her young just as she does in the piled-boxes. In that case there would be no advantage derivable from the purity of the honey. Again, on my plan, the middle-box is so situated that the Queen in it is placed conveniently to superintend her labourers; her eye can behold them in the throngest of their labour, being so near the well fortified entrance of her pavilion. In such a favourable situation, she can view the movements of her subjects, and not a moment need be lost, because all their streets and passages are short. The direct ascent to the top of one of my boxes is not quite eleven inches, and with a middle-sized bell-glass superadded, it does not exceed eighteen inches; so that in one day, when the honey-dew is plentiful, ten thousand Bees will gather more treasure than three times that number on the piling system, in which the Bees are compelled to mount up to the Babylonian height of Thorley's fourth box.