166 DATS OUT OF DOORS. 



found nests of young swifts as late as September. Dr. 

 Brewer says that in Pennsylvania the swift is reported as 

 double-brooded. I do not know about this, but the ap- 

 pearances indicate that they are even triple-brooded, and 

 often quite ignore the lateness of the season. It is noth- 

 ing uncommon for them to leave young birds to starve 

 when they finally decide upon their autumnal migra- 

 tion. 



The anatomy of the chimney swift does not suggest a 

 nocturnal bird, and the thought that only when there is a 

 bright moon are they active at night, arises. Continuous 

 observations do not bear this out. Be it ever so dark, or 

 even stormy, it matters little. Indeed, I have not been 

 able to detect any difEerence, and so the bird has remained 

 to me a mystery. 



But June has many another mystery than this. It is 

 the month that overflows — the month when all nature 

 presses to the fore, and the student rambler is apt to do 

 the least, though now the days are longest, bewildered by 

 the ever-present confusion that surrounds him. 



