no BEEHIVES AND BEE KEEPERS^ APPLIANCES. 



gently on the back of the valve to prevent it from 

 opening except under suction. This spring can 

 best be made of a bit of watch-spring, but a bit 

 of thin hard brass wire does almost as well ; a 

 tack passing through a hole in the watch-spring, 

 or a loop turned on the end of the wire, will fasten 

 it to the bellows board. It would be well to put 

 a narrow strip of leather over the valve and fasten 

 its ends down with two tacks, allowing the valve 

 only about \ in. rise. This is to prevent mis- 



Fig. 102. Bottom Board of Bellows. 



chievous persons thrusting odd articles into the 

 bellows. 



The hinge may now be tacked along the front 

 edges, of the boards and of the pieces x (Fig 95). 

 It is a strip of leather 5 in. by \\ in., and should 

 be glued as well as tacked. The springs may be 

 put in place, and the outer edges of the bellows 

 boards held 2| in. apart while the leather is being 

 glued on. The edges of the boards are rubbed 

 over with strong glue, and the leather laid on 

 and secured with short tacks 1 in. apart. The 

 edges may afterwards be cut flush with the outside 

 of the bellows boards. 



