Contents 



CHAPTER IV 

 THE CYCLE OF THE YEAE 



PAGES 



Brood-rearing — Brood-rearing during tiie season — Tem- 

 perature of tlie hive — Swarming — Preparation for swarm- 

 ing — Issuing of the swarm — Stimulus to leave the hive — 

 Behavior of issuing swarm — Clustering — Supposed aids to 

 clustering — Scouts — Entering the new home — ■ Parent col- 

 ony — Mating flight — After-swarms — Activity of swarms 



— Swarming conditions induced artificially — Peculiarities 

 of bees in swarming — Causes of swarming — S warming- 

 out — Gathering of nectar and storing of honey — Collec- 

 tion of other materials — Killing of the drones — End of 

 brood-rearing — Winter cluster — Movements in winter — 

 Responses to outside temperature — Conservation of heat 



— Source of heat — Effect of accumulation of feces . . 54-92 



CHAPTER V 



THE LIFE OF THE INDIVIDUAL IN RELATION 

 TO THE COLONY 



Developmental stages — Cellular structure of tissues — 

 Egg — Early embryonic development — Later embryonic 

 development — Segmentation — Fate of parts of the embryo 



— Larval development — Metamorphosis — Length of devel- 

 opmental stages — Cycle of duties of the adult worker bee 



— Division of labor — The labor within the hive — Comb 

 building — Feeding of larvae — Composition of larval food 



— Feeding of queen and drones — Other inside work — The 

 guarding of the colony — The labor outside the hive — Divi- 

 sion of labor in gathering — Pollen gathering — Propolis col- 

 lection — The collection of water — Duration of life — "Work 

 determines length of life — Practical applications — Possible 

 determining factors . . 93-131 



CHAPTER VI 

 THE LIFE PROCESSES OF THE INDIVIDUAL 



General plan of the body of the bee — Head — Thorax 



Abdomen — Digestion — Circulation — Metabolism — Res- 

 piration — Excretion — Locomotion — Protective apparatus 132-161 



