104 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 13 
than the one-story, because while the two-story unsheltered hive 
gained 2,808 in 1917-18, the sheltered hive gained 13,346. In 1918- 
24000 A 
U 
af Eg 
20000 ! 
t / 
/ 7 
16000 ! 
t : 
12000 nN 
Ax 
U \ 
TF q 
/ iy \ 
8000 } ; \ 
WZ Te : a 
a ~ 
SS 
magne NO WINDBREAK WINDBREAK 
1917-18 1918-19 1917-18 1918-19 
1 Story 
etn tia 2 Stor. 
— ~-— Packed 
Fig. 2. Showing the gain or loss in the number of bees between the fall and spring 
weighings, demonstrating the value of both packing and windbreak. 
19 the first hive lost 469 while the second gained 5,936. Judged by 
the standard already adopted, the windbreak is shown to be very 
valuable as a factor of winter protection. 
CompPaRATIVE VALUE oF PackED AND UNnPAcKED HIvES FOR 
WINTER 
During the winter of 1917-18, the packed hives were insulated with 
shavings and excelsior for packing material, but it was not as good as 
the forest-tree leaves which were used in 1918-19, and which will be 
used in the future. 
