BEE-ESCAPES AND SUPEB-CLEABING. 183 



The Porter escape (Fig. 48) is very ingenious 

 and perfect in action. It is an oblong tin case 

 open at one end. Above this is fixed a tin cover, 

 with a hole in the end away from the opening in 



Fio. 48. 



the case below, and being extended beyond the sides 

 of the case forms a flange all round, resting upon 

 the sides of a hole cut in the board to receive 

 the oblong case. When this board (Fig. 49) is 

 placed below the super, which it is made to fit, the 

 bees leave by the circular hole shown in the illustra- 

 tion, but they can only leave the small case below by 

 pressing against two fine brass springs. As soon as 



a bee has passed through, the springs return to their 

 former position and prevent bees passing upwards. 

 It is best to move supers bodily, but when long hives 

 are used the back frames will be used as honey recep- 



