52c THE PEACTICAL BEE GUIDE. 



Claustrale," appeared in the preceding year. The chamber (as 

 shown y. 52B) may be attached to, or may form part of any 

 hive. It is closed by the alighting board which is hinged for 

 the purpose and made to fit perfectly light-proof, forming the 

 dark ante-chamber, or cloister. Two zinc aerating tubes, 1" in 

 diameter and two feet long, with revolving hoods on top and 

 air holes within the chamber, provide sufficient ventilation. 

 The bees, shut in from light and liberty, may be safely con- 

 fined in winter C379), or during manipulation of other stocks, 

 or when stocks are being moved from place to place (158); 

 bees in nuclei can be retained (290), robbing can be effectuallv 

 dealt with (310), and the danger of spring or autunan dwindl- 

 ing can be reduced (377), 



