MANAGEMENT OF BEES. 121 
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of the hive at this season should be 
contracted; and for this purpose, it 
is usual to fit into the door-way a 
piece of wood with a small aperture 
sufficient to admit a single bee, or 
at most two: but as the entrance may 
after require a little enlargement or 
contraction according to circumstan¬ 
ces, a more convenient one may be 
made o£ two small pieces of wood, 
with a groove in each, to receive a 
slider, in which is cut two small aper¬ 
tures, wide enough to admit a single 
bee at a time only*. The two small pie¬ 
ces of wood being fastened with pins 
to the sides of the entrance, the slider 
is fixed in the grooves, and may thus 
BP 
