HIVES, 159 



hive-wall a piece a full quarter of an inch deep. There 

 are two sliding shutters (shown in Fig. 50), by which 

 the entrance-way may be regulated as occasion may 

 require. The super-cover is hinged, and so contrived 

 by the aid of a chain, that it can only open until its 

 lines, horizontal when in situ, become perpendicular, 



Fig. 50. — Cheshire's Bak-I-'rame Hive. 



and vice versd. The walls of the hive are double, 

 and have between them a space containing dead air. 

 As heat is conducted by air with extreme slowness, 

 these means prevent the escape of that generated by 

 the bees during rigorous weather, while they also 

 exclude the ardour of the sun's rays during summer. 

 In order to give room for the ears of the frames, the 

 inner skin, front and back, is made an inch shallower 



