340 WINTERING. 
that they be allowed to fly and void their excrements (73) 
whenever the weather is warm enough. At such times it 
will be advisable to clean the bottom-boards of hives, of 
dead bees, and other refuse. 
639. To show the advantages derived by the bees from 
a Winter flight, we will give our experience during one of 
il MO Wm ‘ TI 
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eee as Le wy i It AUT oat 
Fig. 106. ixstpe VIEW OF TWO-STORY DOUBLE-WALL LANGSTROTH HIVE. 
Old style. 
a,b, ¢, double bottom-hoard d. stationary outer-case. f, portico yg, entrance through 
double wall. h,i, front and hack oflower hive. j z, rabettedpieces. /, lower honey-bosrd. 
m, lower part of cover. 0,q, cover, 7, upper honey-board. u,u, t, frames. w, front and 
rear of upper story. 
the coldest Winters, that of 1872-3. From the beginning 
of December to the middle of January, the weather was 
cold and the bees were unable to leave the hive. The 16th 
