WINTER BUTTERFLIES IN BOLINAS 



but to the very same tree, 

 and always to the southerly 

 and easterly side of it. This 

 tree is within sight and sound 

 of the surf which perhaps 

 reminds the butterflies of the 

 roar of rushing streams and 

 waterfalls in the mountains 

 whence they came. Is it in- 

 stinct,or scent, or the climatic 

 advantage of some especial 

 tree which guides them in 

 their choice? It is certainly a 

 mystery that a newly arrived 

 flock should choose the iden- 



