THE MIGRATION OF BUTTERFLIES. 



839 



at the latter from the S.E., so that it was thought the columns 

 were not identical. At Angers a similar thing was observed on 

 June 10th, the direction being from E, to W t against the wind, 



ML 





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The Painted Lady, Vanessa cardui, $ and $ 



which was not of much force. It was estimated that the number 

 passing along a single street in one hour was from 40 to 50,000. 

 At Wiirtemberg, from June 1st to 8th, an incessant migration 

 from S. and W. towards N.E, and E. was remarked. In the 



2d 2 



