Recently published Ornithological Works. 207 
1894, 1898), writes on two small collections recently re¬ 
ceived from that country. In the first of these, from 
Angmagsalik, in East Greenland, there are no new species 
represented; in the second, from West Greenland, the first 
occurrences in Greenland of the White-billed Northern 
Diver, Colymbus adamsi, and of the Bobolink of North 
America, Dolichonyx oryzivorus , are recorded. 
17. Herman on the Migration Question. 
[Vom Zuge der Vogel auf positiver Grundlage. Von Otto Herman. 
4 Aquila,’ 1899, p. 1.] 
Those who are interested in the question of the migration 
of birds should not fail to consult Herr Hermanns essay, 
which contains a good resume of the present state of our 
knowledge of this very difficult and mysterious subject. 
Although much light has been thrown upon it by the 
numerous writers of whose labours the author gives us the 
results, we cannot say that either the causes of migration 
or the manner in which it is effected have been yet satis¬ 
factorily explained. 
18. ‘ Irish Naturalist.’ 
[The Irish Naturalist, a Monthly Journal of general Irish Natural 
History. Edited by G. H. Carpenter and R. Lloyd Praeger. Vol. viii. 
Nos 5-12. Dublin: Eason & Sons, Ltd., 1899.] 
The ornithological portion of this useful magazine con¬ 
tinues to be well kept up. The notes on the Razorbill, made 
by Mr. Carron, one of the Irish lighthouse-keepers, and 
communicated by Mr. R. M. Barrington, are well deserving of 
attention; and Mr. Edward Williams's account of the occur¬ 
rence of the Sociable Plover ( Vanellus gregarius) near Navan, 
co. Meath, is of remarkable interest. A photograph of this 
rare visitor, with full details, is given in the November part, 
and it is rather remarkable that, although this bird's most 
western breeding-limit is in the Crimea, yet the first British 
example occurred in Lancashire, and the present specimen has 
been obtained in Ireland. Dr. C. J. Patten, after writing at 
some length about the nesting of the Little Tern, has given 
