OBSERVATORY BEEHIVE FOR TEMPORARY USE. 75 



made first. This frame is shown in detail, with 

 dimensions, by Fig. 73. The internal dimensions 

 should be exactly followed, but the frame should 





Fig. 69. Observatory Beehive for Temporal y Use. 



l3e left a trifle full outside in order to facilitate the 

 fitting to the case into which it is inserted, by 

 taking shavings from each of the sides until an 

 exact fit is obtained. 



