PROGRESS REPORT ON THE EUROPEAN CORN BORER 
115 
juices of various fresh and decaying fruits, but when these sub- 
stances were used under natural conditions in an effort to attract the 
moths, only negative results were obtained. In Hungary Jablonow- 
ski 11 observed large numbers of P. nubilalis moths swarming, in 
N 
k 
ORLEANS 
Fig. 47. — Map. showing scene of flight experiment across Cape Cod Bay in 1922. A, 
liberation point. B, recovery point 
the dusk of the evening, over blossoming fields of clover, alfalfa, 
and potatoes. His explanation of this occurrence was that the 
moths were drinking the dew found on the leaves and flowers by 
night. It is also possible that the moths were sipping nectar from 
the flowers of these plants. 
See footnote 1. 
