Letters, Notes and Extracts. 223 
New Expedition to Katanga.—Mr. S. A. Neave, of 
Magdalen College, Oxford, of whose travels and collections 
in North-east Rhodesia we gave a short account in our last 
number (‘Ibis,’ 1906, p. 740), has arranged to accompany 
another expedition which is shortly leaving for Northern 
Rhodesia, and hopes to continue his ornithological and other 
zoological work in that country. The chief object of this 
expedition is to explore the Katanga Copper District in 
the Congo Free State, and thence it will probably pass along 
the water-parting of the Congo and Zambesi Rivers towards 
the Angola frontier, following more or less the line of the 
proposed new railway. This ought to be a very interesting 
country to the zoologist, its fauna being as yet very little 
known. 
Mr. Neave’s account of the birds which he collected in 
North-eastern Rhodesia has gone to press, and will be shortly 
published in the ‘ Notes’ of the Manchester Museum. 
Canon Tristram’s last Collection of Birds.—We learn from 
‘Science’ that the Academy of Natural Sciences of Phila- 
delphia has acquired the /ast Collection of Birds made by 
the late Canon Tristram, numbering some 7000 skins and 
representing upwards of 3000 species. It will be recollected 
that Canon Tristram’s original Collection (of 20,060 speci- 
mens) was acquired by the Free Public Museums of Liverpool 
in 1896 (see ‘Ibis,’ 1906, p. 605), immediately after which, 
we believe, Canon Tristram began collecting again. 
The Tschusi Collection of Palearctic Birds.—This valuable 
collection, probably the most complete of its kind on the 
Continent, has recently been acquired by the Vienna Museum 
of Natural History. It consists of about 6000 beautifully- 
prepared skins, and has been accumulated during the last 
thirty years by one who had a clear understanding of the 
great importance of well-ascertained localities, N early every 
species of the Western Palzayrctic Region is represented 
by series of specimens illustrating its distribution, as well 
