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UNITED STATES DEPARTMENT OF AGRICULTURE 
DEPARTMENT BULLETIN No. 1349 
Washington, D. C. 
September, 1925 
THE BROOD-REARING CYCLE OF THE 
HONEYBEE * 
W. J. NOLAN, Associate Apiculturist 
Division of Bee Culture Investigations, Bureau of Entomology ' 
CONTENTS 
Page 
Introduction 1 
Method 4 
Annual Brood-Rearing Cycle 6 
Description of the Colonies Used in 1921 ., 1Z 
Seasonal Characteristics of 1921 13 
Brood Rearing of a Typical Colony for Two Successive Seasons 14 
General Observations on the Remaining Colonies 16 
General Discussion of the Records for 1921 25 
Observations in 1920 27 
Migrations of the Queen Within the Hive 30 
Compactness of Brood Nest 32 
Time Relation of Brood Rearing to Nectar Gathered 33 
Egg Laying 35 
Conclusions 36 
Literature Cited 37 
Tables 38 
Graphs « . 44 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1925 
