MOVABLE-FRAME HIVES. 165 
to support am adjustable entranee-block. Some Apiarists 
use a tin slide, instead of an entrance-block. We object to 
it, because, if glued by bees it may be bent in handling, and 
if it is mislaid, it cannot always be promptly replaced ; 
while any square wooden-block can take the place of the 
entrance-block, if necessary. 
HIVE, SETTING FLAT ON THE BOTTOM. 
343. The apron, or slanting-board, helps overladen 
workers to reach the entrance, when they have fallen to the 
ground. The blocks that support the bottom, may be made 
of unequal height, so as to give the hive the proper forward 
slant, on level ground. If the grain of the lumber in the 
bottom-board runs from front to rear, it will shed water 
