164 DIPPEE. 



September, they nearly assume the adult plumage, but not 

 entirely so until the second change. 



I refer my readers to a demonstrative and most conclusive 

 paper by my brother, Beverley R. Morris, Esq., M.D., the 

 Editor of 'The Naturalist,' vol. i, pages 5 to 11 of that 

 periodical, 'On the power that certain Water-Birds possess of 

 remaining partially submerged in deep water.' 



