50 BULLETIN" 1349, TJ. S. DEPARTMENT OF AGBICULTTJEE 



20,000 



/s,ooo 



w,ooo 



,5,000 



MAX. APR. MAY* UC/A/E JULY AUG. SEPT. OCT. 



Fig. 24. — Curves showing amount of sealed brood found weekly in the various hive bodies during 

 the season of 1921 in colony No. 4. The heavy unbroken line represents the total of all hive 

 bodies; the dotted line the first, the narrow unbroken line the second, and the narrow broken 

 line the third hive body 



