FORTY YEARS AMONG THE BEICS. 



305 



warm enough for a flight came within a short time. In- 

 deed, no such day has come up to the first of February, 

 and there is no great prospect of it till spnng. 



Fig. 110.— Null Boxes. 



A thin partition of lath and plaster is all that sepa- 

 rates the bee-room from the room in which the furnace is 

 located, and the thermometer in the bee-room generally 

 shows a temperature of 50 degrees. Some of the hot-air 

 pipes pass through the bee-room overhead, and a ther- 

 mometer laid on one of the two hives directly under one 

 of these pipes nearest the furnace shows a temperature 

 of 70 degrees. The pipe is covered with asbestos paper, 

 but there is only a space of about three inches between the 

 pipe and the top of the hives. There is plenty of room to 

 set these colonies in a cooler place, but they will be al- 

 lowed to stay right where they are to see what the result 

 will be. The first half of their winter's confinement does 



