- 244 ON TAPvlOUS PARTS 



like the bats are come forth to collect w 

 little food ? Bats appear at all seasons 

 through the Autumn and Spring months, 

 when the thermometer is at 50, because 

 then phalsenae and moths are stirring. 

 These swallows looked like young ones.> 



White. 



Of their migration the proofs are such as 

 will scarcely admit of a doubt. Sir Charles 

 Wager and Captain Wright saw vast 

 flocks of them at sea, when on their pas- 

 sage from one country to another. Our 

 author, Mr. White, saw what he deemed 

 the actual migration of these birds, and 

 which he has described at p. 1 1 1 of his His- 

 tory of Selborne ; and of their congregat- 

 ing together on the roofs of churches and 

 other buildings, and on trees, previous to 

 their departure, many instances occur; par- 

 ticularly I once observed a large flock of 

 house- martins on the roof of the church 

 here at Catsfield, which acted exactly in 

 the manner here described by Mr. White, 

 sometimes preening their feathers and 



