12 BULLETIN 685, U. S. DEPAKTMENT OF AGRICULTURE. 



a. 



s 



g 



t^ 



o 

 o 



1 



_o 

 1 

 1 



.g 



l-( 



Total 

 per cent 

 given 

 winter 

 protec- 

 tion. 



Oh" 





• to to 



Q 

 •15 00 CO to 



^^OUJC. ^o«oo 



Straw 

 cover- 

 ing and 

 miscel- 

 laneoas. 



R^ 





-# 











IN 





" 













<N 



Wrap- 

 pings of 

 tar paper, 

 etc. 



















eo 



10 













to CO 





PL, M 



















« 



CO 











CO ■* (N 



Packed 

 or in 

 cellar 

 (not 

 sepa- 

 rated). 



cC 







§ 



to IM 



•* 

























Double- 

 walled 



and 

 packed 

 hives. 



a; 





T-( CO 





CO 10 



05 



10 « 





to C5 to 

 M CO (M 



6 



tt^ 





^ 



'° ^ 

















2 =^ § 



'Si) 



>> 



II 



a =^ 

 .a -a 



§ 



o 



w 



00 



X 



Ot^OO— ( OOCMlO-rt^-^ (MOO00t-( OSC^^H^Ht^ 



• cocooicoco cqeoMcocc coMMcqco c^ m m n n 





»0»OCSC^tO ^htHCO-^O ^MWlOt^O COOQlOlrtCfl 

 ^COCOCOMM MCOtOCOm COKICOIN-* eoe^Mco-* 



3 



a-. 



^^^0-^05 lO-J'OS-^^H lOt^Tj^I^O O^HCOTfCO 



1^ 









uo -^ 



<M CO 



00 Oi t^ 

 C^ M <N CO 



coeocociS S-*S5«e< 





Honey 

 needed 

 to win- 

 ter a 

 colony- 

 out- 

 doors. 



.2 





s s 



no i-t 10 ^ 

 CO CO <N CO 



oooiotoo t^ogiT-4Cfl 

 co<Neo(Mco M-^Neoe^ 



Longest 

 period 

 confined 

 to hives 

 in usual 

 winter 

 without 

 a flight. 



1 





CT> 



r^ 00 CM 



1-H c4 <N (N 



CO eo 



NO 10 m 

 t-i .-< ,4 ■ oj ei cq 



Usual 

 length 

 of time 

 between 

 fall and 

 spring 

 nectar 

 flows. 







to (N 



t^ to 



i-( (N r^ 



CO t^ 10 I>^ 



Ot^OtOIN 00iMCO-*i00 



c040t>^-«i<wi -.^TjJtocoto 









1 



c 

 E 



r 

 



£ 



> 



1 





1 



i 



. 



1 





1 



i 



s 

 ft 



1 



;e 



'5 



> 



si 



;5 



'S 



> 

 1 



1 

 g 



1 



02 









d 







1 



.d 



.3 





