The entrance into a hive is generally cut out of its bottom edge. This has a tendency to cause decay in that part, particularly if of straw; besides that, a hole so made affords but indifferent protection from driving wet or a scorching sun, and gives imperfect facility for the escape of moisture from the hive. It is a better plan to sink the passage out of the thickness of the floor-board, till it reaches the inside of the hive. There are several ways of doing this, but a simple one is the following: Let the board be of thick, seasoned wood, and to prevent warping, screw two strong cross-bars to the underneath side, seven or eight inches apart. In size the floor-board ought to be a little larger than the exterior of the hive, from whence it should be chamfered down every way, to three eighths of an inch at the edge. From the latter, the entrance must be cut or grooved out, straight and level till it enters the inside of the hive, when it may slope upwards. This groove may be about four inches wide, and three eighths of an inch deep where the hive crosses it; for it is better in all instances that the requisite space at the door should be given laterally, rather than in height. This is not only more convenient to the bees, but shuts out from admission into the hive such guests as the snail or the mouse. In a board thus constructed a convenient mode of occasionally contracting the entrance-way is by means of small wooden blocks, of different widths, so formed that the lower half can be pushed within the hive’s mouth. The board just described, and its blocks, are shown in the engraving beneath.
Another kind of hive-board, suitable for some description of boxes, is made by cutting a rabbet of any required width, and three-eighths of an inch deep, on all its sides, leaving the raised part of the board the size of the outside of the box, with an additional half inch beyond this, every way. The passage into the hive is to be cut from the edge of the rabbet, and on the same level, for about two inches; after which it must slope upwards. It may be four to five inches wide, and its sides should bevel a little outwards. This gives facilities for the introduction of moveable blocks or mouth-pieces, for the convenience of contracting or altogether stopping up the entrance, as may be required. The blocks are an inch wide, and must all be of one size, and of the same length and bevel as the entrance-way. In height they should be three quarters of an inch in front; cut down behind, half the width to three eighths of an inch. Thus made, the lowest half inch of the block is inserted within the mouth of the hive, and the other half projects on the outside. To suit all cases and seasons, blocks so formed may be cut on the lower part, from front to back, with any required passage-way through them at pleasure. The preceding engraving exhibits one of these boards, with a front and back view of four blocks thus varied; the third one being fitted with perforated zinc.
An entirely covered entrance, for those who desire it, is afforded by a double board, in which the passage is cut through the floor, altogether within the hive; and it may be thus made:
Take a piece of inch seasoned wood, an inch or two broader and longer than the hive. Smooth both sides, and underneath it cut a groove four or five inches wide, and four inches back from the edge. The part next the edge should be there hollowed out three eighths of an inch deep, increasing to double this at the other end, where it enters the hive. An opening through from the upper side must be made, to meet the underneath hollow, giving a gradual slope down into it. A piece of three-quarter inch board, seven to nine inches wide, must then be screwed underneath, the grain crossing the other; the doorway for the bees being of course between the two. The lower board should be a little the longest, the extra length being intended to form a small alighting board in front.
All the boards in the preceding illustrations are shown square as to form; but any of them may at pleasure be made round.