It often happens, when a large number of stocks are kept, that in spite of all precautions, some of them are found in the Spring, so greatly reduced in numbers, that if left to themselves, they are in danger of falling a prey to the devouring moth. Bees, when in feeble colonies, seem often to lose a portion of their wonted vigilance, and as they have a large quantity of empty comb which they cannot guard, even if they would, the moth enters the hive, and deposits a large number of eggs, and thus before the bees have become sufficiently numerous to protect themselves, the combs are filled with worms, and the destruction of the colony speedily follows. The ignorant or careless bee-keeper is informed of the ravages which are going on in such a hive, only when its ruin is fully completed, and a cloud of winged pests issues from it, to destroy if they can, the rest of his stocks. But how, it may be asked, can it be ascertained that a hive is seriously infested with the all-devouring worms? The aspect of the bees, so discouraged and forlorn, proclaims at once that there is trouble of some kind within. If the hive be slightly elevated, the bottom-board will be found covered with pieces of bee-bread, &c. mixed with the _excrement of the worms_ which looks almost exactly like fine grains of powder. As the bees in Spring, clean out their combs, and prepare the cells for the reception of brood, their bottom-board will often be so covered with parings of comb and with small pieces of bee-bread, that the hive may appear to be in danger of being destroyed by the worms. If, however, none of the _black_ excrement is perceived, the refuse on the bottom-board, like the shavings in a carpenter's shop, are proofs of industry and not the signs of approaching ruin. It is highly important, however, to keep the bottom-boards clean, and if a piece of zinc be slipt in, (or even an old newspaper,) by removing and cleansing it from time to time, the bees will be greatly assisted in their operations. As soon as the hive is well filled with bees, this need no longer be done. Even the most careful and experienced Apiarian will find, too often, that although he is perfectly well aware of the plague that is reigning within, his knowledge can be turned to no good account, the interior of the hive being almost as inaccessible as the interior of the human body. The way in which I manage, in such cases, is as follows. Having ascertained, in the Spring, as soon as the bees begin to fly out, that a colony although feeble, has a fertile queen, I take the precaution at once to give it the strength which is indispensable, not merely to its safety, but to its ability for any kind of successful labor.