Of these faults the gravest, the only one which in our climates is invariably fatal, is the repeated swarming. But here we must bear in mind that the natural selection of the domestic bee has for thousands of years been thwarted by man. From the Egyptian of the time of Pharaoh to the peasant of our own day, the bee-keeper has always acted in opposition to the desires and advantages of the race. The most prosperous hives are those which throw only one swarm after the beginning of summer. They have fulfilled their maternal duties, assured the maintenance of the stock and the necessary renewal of queens; they have guaranteed the future of the swarm, which, being precocious and ample in numbers, has time to erect solid and well-stored dwellings before the arrival of autumn. If left to themselves, it is clear that these hives and their offshoots would have been the only ones to survive the rigours of winter, which would almost invariably have destroyed colonies animated by different instincts; and the law of restricted swarming would therefore by slow degrees have established itself in our northern races. But it is precisely these prudent, opulent, acclimatised hives that man has always destroyed in order to possess himself of their treasure. He has permitted only--he does so to this day in ordinary practice--the feeblest colonies to survive; degenerate stock, secondary or tertiary swarms, which have just barely sufficient food to subsist through the winter, or whose miserable store he will supplement perhaps with a few droppings of honey. The result is, probably, that the race has grown feebler, that the tendency to excessive swarming has been hereditarily developed, and that to-day almost all our bees, particularly the black ones, swarm too often. For some years now the new methods of "movable" apiculture have gone some way towards correcting this dangerous habit; and when we reflect how rapidly artificial selection acts on most of our domestic animals, such as oxen, dogs, pigeons, sheep and horses, it is permissible to believe that we shall before long have a race of bees that will entirely renounce natural swarming and devote all their activity to the collection of honey and pollen. {110}