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result n/y be the formation of a simple but almost completely ’'artificial” or "conventional” 
language within the group. 
VII. In some cases, the differences between the signal patterns of different species 
of American primates are obviously correlated with differences in feeding habits and 
gregarious reactions. Examples* 
1. Bird-like calls of marmosets. 
2. Relatively great "volubility" of Cebus . 
3» Distress Calls of young marmosets and Night Monkeys. 
4. "Advertising Song" of large species. 
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