Contents 



CHAPTER IV 

 THE CYCLE OF THE YEAR 



Brood-rearing Brood-rearing during the season Tem- 

 perature of the 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 Swarming- 

 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 develppment 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 



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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 



