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 as also to the north-western portions of the African continent, as for example the lakes of Morocco, Algeria, and Tunis. It also sometimes visits Spain. In an easterly direction it is to be met with in great numbers throughout the lake districts of Central Russia, and also near the mouths of large rivers, both in Southern Russia and Central Siberia. Of the Whistling Swans that breed in Iceland, few ever wander far from their native place, and this for a very simple reason, namely, that owing to the Gulf stream which sweeps through its numerous bays and creeks, and the many hot springs derived from volcanic sources, the inland lakes are kept free from ice, while in Russia the swans are all obliged to take their departure before the setting in of winter freezes the lakes and rivers.

(Cygnus musicus).

In its general appearance the Whistling Swan bears some resemblance to the Mute or Tame Swan, but is by no means so elegant in its shape. Its neck has not the same flexibility or the same graceful bend; nevertheless, though surpassed in grace by Cygnus olor, it is a very beautiful bird. The main feature in which it differs from other Swans is its loud-toned and agreeable voice. Pallas informs us that "its voice has a sound as sweet as that of a silver bell," and adds, "it sings as it flies, and may be heard at a great distance, indeed all that has been said of the notes of the dying Swan is no fable, for with its last breath the wounded 'Singing Swan' utters its song."

"The epithet musicus," says Faber, "is well bestowed on these birds, for when a little flock of them approaches, flying in the air, their tuneful melancholy voices sound like trumpets heard at a distance. Olaf tells us, "when a company of these birds passes through the air, their song during the long winter nights is truly delightful, equal to the notes of a violin." "It is certain," says Arman, "that the voice of a Singing Swan has a more silvery tone than that of any other creature. When wounded, its breath produces this silver sound, so that its song is celebrated in many a Russian ballad." Oesel says, "Their song consists of two notes, which when uttered by the whole flock are