290 ARTHUR C. WALTON 



SUMMARY OF RESULTS 



(1) The habit of going to a compartment on release must 

 be formed for each one separately before discrimination of from 

 two to four can occur. 



(2) The discrimination of four compartments was retained 

 for at least a delay period of one minute, and of a fewer number 

 of compartments, for a much longer period. 



(3) The discrimination of two objects is within the native 

 capacity of the dog. 



(4) Visual and olfactory cues are not necessary for correct 

 reaction. 



(5) Signs of orientation may be prominent in the dog, but 

 such cues were not important for the success of the delayed 

 reaction in the animal experimented upon. 



(6) Distractions of all kinds, visual, olfactory and auditory, 

 or such as might arise from the natural behavior of the dog, 

 may not necessarily interfere with successful delayed reactions. 



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