rt of Canada, in
Greenland and in Iceland. It has been said to do so in Scotland as well
as in Norway, but the assertion seems to lack positive proof, and it may
be doubted whether, with the exception of Iceland, it is indigenous to
the Old World,[5] since the form observed in North-eastern Asia is
evidently that which has been called _C. adamsi_, and is also found in
North-western America; but it may be remarked that one example of this
form has been taken in England (_Proc. Zool. Society_, 1859, p. 206) and
at least one in Norway (_Nyt Mag. for Naturvidenskaberne_, 1877, p.
134). (A. N.)

FOOTNOTES:

[1] The remains of _Colymboides minutus_, from the Miocene of Langy,
described by this naturalist in the work just cited, seem to show it
to have been a generalized form. Unfortunately its tibia is unknown.

[2] A. H. Garrod, in his tentative and chiefly myological arrangement
of Birds (_Proc Zool. Society_, 1874, p. 117), placed the
_Colymbidae_ and _Podicipedidae_ in one order (_Anseriformes_) and
the _Alcidae_ in another (_Charadriiformes_); but the artificial
nature of this assignment may be realized by the fact of his
considering the other families of the former order to be _Anatidae_
and _Spheniscidae_.

[3] The osteology and myology of this species are described by Dr
Coues (_Mem. Boston Soc. Nat. History_, i. pp. 131-172, pl. 5).

[4] Lawrence's _C. pacificus_ seems hardly to deserve specific
recognition.

[5] In this connexion should be mentioned the remarkable occurrence
in Europe of two birds of this species which had been previously
wounded by a weapon presumably of transatlantic origin. One had "an
arrow headed with copper sticking through its neck," and was shot on
the Irish coast, as recorded by J. Vaughan Thompson (_Nat. Hist.
Ireland_, iii. p. 201); the other, says Herr H. C. Muller (_Vid.
Medd. nat. Forening_, 1862, p. 35), was found dead in Kalbaksfjord in
the Faeroes with an iron-tipped bone dart fast under its wing.

DIVERS and DIVING APPARATUS. To "dive" (Old Eng. _dufan_, _d['y]fan_;
cf. "dip") is to plunge under water, and in the ordinary procedure of
swimmers is distinguished from simple plunging in that it involves
remaining under the water for an interval of more or less duration
before coming to the surface. In the article SWIMMING the sport of
diving in this sense is considered. Here we are only c