AS THE BIOLOGIST SEES IT 



and wound me. But the other tarantula, 

 of the same kind and found in the same 

 field, would let me fondle him and would 

 walk in friendly fashion up my bare arm 

 without ever a thought of hurting me. 

 He was a sweetly dispositioned tarantula. 

 You see I have used terms in describ- 

 ing the behavior and character of these 

 spiders that we generally reserve for ac- 

 counts of human behavior and charac- 

 ter. And if you say that I should not 

 attribute character or disposition to them 

 but should limit myself to describing their 

 manner of behavior, because we do not 

 know that their behavior was controlled 

 by their disposition chemical or physical 

 stimuli may have controlled it then I 

 reply that I can quite as easily and much 

 more confidently describe the similarly 

 contrasting behavior of two human in- 

 dividuals in terms that we usually limit 

 ourselves to in describing animal be- 

 havior. The difference is, we have had 

 so much experience with human individ- 

 uals, that is, have made so many ob- 

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