TABLE OF CONTENTS. 



Introduction l 



The Hive Odor and the Reactions Resulting from it 4 



Modification of Reactions toward the Hive Odor 5 



The Swarming-out of a Queenless Colony 5 



Intensifying the Reaction 6 



Overcoming the Reactions toward Hive Odor 6 



The Odor of the Queen 7 



The Brood Odor 9 



The Indifferent Odor of Young Bees 9 



Failure of the Hive-odor Reactions in Queens and Drones 10 



Abnormal Hive Odor 10 



The Means of Communication in Bees 12 



Investigations with Colonies from which the Queens are Taken 12 



Behavior of a Queenless Swarm 14 



Disregard of a Queen in Open Air 14 



Hearing Capacity and Sensations of Sound Present 15 



Experiments on Swarms 15 



The Infecting Influence of the Swarm-tone 16 



The Enticing Note of Bees 16 



The ' ' Teeting ' [ and ' ' Quahking " of a Queen 17 



The Queen 'a Tone of Fear 17 



Memory of Place in Bees 19 



The ' ' Paths ' ' of Bees and their Direction 19 



Disappearance of the Memory for Location through Narcotization 23 



The Box Experiment 23 



The Loss of Memory for Location through Swarm Dizziness, etc 27 



Associations of Impressions 28 



Memory for the Feeding-place in the Hive 28 



Conduct of Bees in the Buckwheat Season 29 



Are Bees Attracted by the Color of Flowers or by the Nectar? 29 



Place Perception in the Queen 29 



Memory for Locality in Scouting Bees 30 



The Eyes of Bees 32 



The Flight of Orientation 32 



The Finding of the Hive through the Senses of Sight and Smell 33 



Bethe 's Tree Experiment 34 



Special Capacity for Orientation in Bees 36 



The Influence of Weather Conditions on the Sense of Sight, therefore on the 



Ability to Orient 37 



Influence of Color on Bees 38 



Some Further Contributions to the Natural History 40 



The Flight of Bees into a Room 40 



The Behavior of Bobbing Bees 41 



The Origin of Hostile Conduct 40 



The Vanishing of Instincts with the Decrease in the Strength of a Colony 41 



Reactions toward Flight 41 



The Formation of the Honey-comb 42 



The Play Instinct in Bees 43 



Conclusions 44 



BlBLIOCxRAPHY 46 



