our voyage. They were very numerous on 
the coast of Greenland in company with 
the Eider Ducks; but they were too shy 
to approach the ships, and opportunities 
of seeking them on shore were very rare 
and very hurried. Two females were 
killed, agreeing as well as the male with 
the descriptions of Authors. It is reason- 
able to suppose that they are the same 
number of years in attaining maturity, as 
the Eider Duck ; but the different states of 
their immature plumage have not as yet 
been noticed. This is one of the desiderata 
which it is hoped the next voyage will sup- 
ply, The rarity of this bird in the milder 
parts of Europe, and the want of specimens 
of it in the best collections, have occasioned 
it to be imperfectly known, except amongst 
the writers on the ornithology of the north- 
ern regions. Temminck in his Manuel 
considers it as the Anus Molissima in 
one of its changes." * It is however 
noticed in the second edition of his Manuel, 
now preparing for publication, as a distinct 
species." 
Landt in his description of the Feroe Isles 
