448 B. H. Brough—TIron Ore Supplies. 
warrant their recognition as belonging toa distinct species. This may 
be known, after the discoverer, as Diceros white, sp. nov. 
Diceros whiter, sp.nov. The humerus of this species differs most 
remarkably from that of D. dvcornis in the shape of its distal end. 
The olecranon fossa is very much narrower than in D. bicornis, being 
29 mm. in diameter, as compared with 51 mm. for a specimen of the 
latter. Indeed, the whole bone, although evidently that of a fully 
adult individual, is smaller and much slighter in proportion to its 
length, which is 330mm., from the trochlea to the head of the 
humerus, while D. dicornis measures 358mm. The tibia, although 
not differing to the same extent as the humerus, is nevertheless 
slightly narrower in proportion, and a little shorter. This species is 
evidently a form of rhinoceros smaller and less heavily built than 
D. bicornis. For this reason it is also distinct from D. s¢mus, and from 
D. simplicidens, Scott, which is likewise larger than D. bicornis. 
I hope shortly to publish figures showing fully the differences between 
the species. 
Equus sp. Several molars probably belonging to a zebra. 
Connochetes taurinus, Burch. The basal portion of a horn-core. 
Strepsiceros strepsiceros, Pall. An imperfect horn-core. 
Taurotragus oryx, Pall. Portion of a horn-core. 
In addition to the above there are in the Rhodesia Museum a number 
of bones and teeth of various other antelopes, not identifiable with 
certainty. 
AVES. . 
An incomplete pelvis of a small bird, an ulna, and several leg-bones. 
AMPHIBIA. 
The ischial portion of a frog’s pelvis; also an astragalus and 
calcaneum. 
VI.—Iron Ore Svppries. 
By Bennett H. Broveu, Assoc. R.S.M., F.G.S., F.1.C. 
F all the problems with which the practical geologist has to deal, 
none is of greater importance at the present time than the 
discovery of fresh sources of iron ore supply. very inhabitant of 
the United Kingdom, of the United States, and of Germany requires 
annually about a quarter of a ton of the iron of which the world last 
year produced 60,000,000 tons, the result of the smelting of over 
120,000,000 tons of ore. Year by year the production and consumption 
are increasing, and many of the deposits of the richer ores are showing 
signs of depletion. The question of ascertaining how the demand for 
the vast supplies of iron ore that will in the future be needed will 
be met calls, therefore, for very serious consideration, and a few 
statistical notes may be useful as a contribution to a discussion of 
the subject. 
1 Third Rep. Natal Geol. Survey, 1907, p. 257. In employing the generic 
name Opsiceros tor his species, Scott has overlooked a paper by Thomas in P.Z.S., 
1901, p. 158, where it is shown that Gray’s name Diceres antedates by twenty years 
Opsiceros, Gloger. 
