90 J. S. SZYMANSK] 



the obligatory ten reversals. The learning-curve is the same 

 as those of the third series in normal animals. 



Felix Plateau " has recently stated, as a general conclusion 

 drawn from his experiments with bumblebees, that " chez 

 Bourdons et vrais-semblablement chez les autres inseetes la 

 memoire des faits n'existe pas" (p. 159). The results of my 

 experiments do not support this statement. 



6 Plateau, F. Les in.sectes ont-ils la m6moire des faits? L'annee psychologique 



!«)()<). t. 15. pp. 148-159. 



