TEE SOCIAL WASPS. 35 l 



1. All wasps possess the instinct of fear. This is especially strong 

 the first few days after emergence, but is readily overcome by the fre- 

 quent appearance of the awe-inspiring object. 



2. The feeding instinct is evidently called forth in response to 

 olfactory impressions. These responses become more precise as they are 

 repeated. 



3. Once established, under favoring conditions separate reactions 

 combine to form complex habits. 



4. In a sense, the wasp remembers. This is indicated by the manner 

 in which it accustoms itself to the sight of strange objects, and by its 

 behavior when a change is made in its nest or surroundings. 



5. It shows considerable individual variability, both as to time and 

 manner of its response to stimuli. 



6. Wasps do not imitate one another. Instinct and individual 

 experience account sufficiently for their powers, and their apparent 

 cooperation is due entirely to the accident of their being born on the 

 same nest. 



