side of the perforated plate; when after remaining in this state for about twenty-four hours, they had so far communicated to each other their respective effluvia, and so completely commixed were the odours in both hives, that on withdrawing the perforated plate, the bees mingled together as one family, no disturbance being excited, but such as arose from the presence of two queens, the custom being always, in such case, to dethrone one of them. According to Huber this is effected by single combat between the queens: which subject will be adverted to in a future chapter. +Keys+ has observed that _these incorporations seldom turn to account unless they be effected in summer_; and when it is considered that the principal gathering months are May and June, (excepting in those neighbourhoods that abound in lime, sycamore, and other trees that are apt to be affected with honey-dew,) we cannot, of course, expect them to be very successful. I have entered fully into this subject, when speaking of early and late swarms, page 115. To obviate the consequences there apprehended, some apiarians have had recourse to the practice of removing their bees to fresh pasture; to districts where buckwheat is cultivated, or to the neighbourhood of heaths, or to any other place where such late blossoming flowers abound as afford honey. Mr. +Isaac+ assures us that he once had a poor swarm of a month's standing, which only weighed five pounds four ounces, and that on the 30th of July he had it removed to _Dartmoor Heath_, from whence it was brought home, two months afterwards, increased in weight twenty-four pounds and a half. He moreover states that the increase of others, that were sent there, was nearly proportional, and is of opinion that the whole addition was made during the month of August.