The frames are held firm and kept at their correct distances apart by means of small staples, and a slit is formed lengthways for the insertion of impressed wax sheets or guide-strips cut from these. The crown-board rests on the thin edge of zinc, in order that it may be replaced more quickly, with less danger of crushing a bee than on a broader surface. There is a feeding-hole in the centre of the board, which in some hives is closed by a zinc slide running in an opening cut out of the wood, and in others is covered by a wooden block. In the more highly finished hives two long openings are cut for admitting bees to the super. Two slides for each opening are supplied--one pair being of plain zinc for closing them entirely, the other with slits cut of three-sixteenths of an inch in width for the purpose of queen-preventers (see Chap. IV. § xvii.). The supers are similar, but not so deep, and have eight frames instead of nine; they are, however, _frames_, and not mere bars as ordinarily. The sides and top are of _glass_, with baize-lined shutters. A hive intermediate between this and the Philadelphia (§ xii.), and which may be called "The Cottager's Improved Frame Hive," is shown inside the opened cover on page 179. It has a straw crown-board and a larger window, and is designed to admit a zinc adapter with queen-preventing perforations; in other respects it is identical with the above hive. 2. Straw.--The figure overleaf exhibits "Neighbours' New Straw Frame Hive," with super attached. It is of exactly the same size and construction as the foregoing. There is a straw crown-board with feeding-hole in the centre, and two slits of zinc with queen-preventing openings as above. The supers of the straw hive are made of its own material, but have three windows instead of one. The advantages of straw for hives are described under the Woodbury straw hive, above. [Illustration] 3. Glass.--A representation of this same hive in glass, with its super, is given inside the opened cover figured on page 177. Nothing need be added here, as the construction is the same with that of the wood hive. See the description of the Woodbury glass hive in the previous section for general remarks upon hives of that material. § XI. NEIGHBOURS' COTTAGER'S FRAME HIVE. [Illustration] This is a simpler and less expensive hive than the one just described, being without windows or a dummy, and with wooden crown and floor boards. In other respects it is the same, and is thus suitable for persons with small means, or who may wish to purchase in large numbers. Almost any kind of super may be adjusted to this hive, but those specially adapted are the frame super and our divisional and sectional supers, for all of which see the article on "Supers" (Chap. IV. § vi.). To admit of their addition the crown-board must be removed, and a zinc adapter with queen-preventing openings substituted. § XII. THE PHILADELPHIA FRAME HIVE.