132 Reviews—Brief Notices. 
Sandstone, Sudan, Darfur, Kordofan, and Abyssinia are all referred to, 
and a map is given showing the distribution. The iron of Egypt does 
not appear to be of much commercial importance, but that of Darfur 
and Kordofan may possibly be worth attention in future. 
14. Creracrous or PonpoLtanp. — With regard to the age of the 
Cretaceous rocks of Pondoland and those of Port Durnford to beyond 
St. Lucia Bay, it has been shown by Mr. Henry Woods (Ann. South 
African Mus., iv (7), December, 1906) that they are the equivalent of 
the Campanian (Upper Senonian) of Europe, the Ariyalur Beds of 
Trichinopoli, and the Valudayur and Trigonoarea Beds of Pondicherri. 
Deposits of a similar age have been shown to occur in Madagascar. 
Griesbach supposed that five faunas could be recognized in successive 
zones of these African deposits, and correlated the uppermost with the 
Greensands and the White Chalk of England. Later on, Rogers and 
Schwarz showed that the fauna was more generally distributed 
vertically than Griesbach had supposed, and belonged to one deposit. 
Woods’ work confirms this, and proves that only one zone is represented. 
15. Tae Poospuatre Deposits or Sourn Carotina anD New Brons- 
wick. ByG.F. Marraew, LL.D., F.R.S.C. Bull. Nat. Hist. Society 
of New Brunswick, vol. vi, pt. 1, p. 121.—This is a brief account of 
a visit to the deposits on the rivers of South Carolina, from which 
so much calcium-phosphate has been obtained of late years, chiefly 
in the form of bones and teeth of extinct forms of vertebrates taken 
from layers under the river beds of those streams. The remains are 
of various ages, from the Eocene upwards, but have been rolled in 
the sea and redeposited in beds, which contain many recent shells 
and so are comparatively modern. These recent deposits are compared 
with the vastly more ancient Cambrian phosphates of New Brunswick, 
which have been accumulated under somewhat similar conditions. In 
these last-named beds the phosphatic nodules are mingled with 
Brachiopod shells and the detached portions of the heads and body- 
segments of trilobites. 
16. Geonoetcat ‘ltme.—In an article on ‘‘ The Accumulation of © 
Helium in Geological Time” (Proc. Roy. Soc., 1909, ser. A, 
vol. lxxxili, p. 96) the Hon. R. J. Strutt gives the results of 
investigations among iron-stones which contain heium. He remarks 
that the results on hematite from co, Antrim are especially note- 
worthy, as it would appear that the Eocene period must be put back 
thirty million years. 
17. Roya Scorrish Museum, Eptnpurcu.—A useful Jntroduction to 
Petrography and Guide to the Collection of Rocks in the museum 
has been prepared by Dr. 8. J. Shand (pp. 50, 1909), and is sold at 
the price of one penny. It deals with the Igneous, Sedimentary, and 
Metamorphic rocks, and contains introductory remarks on the nature 
and genesis of rocks, and on the general character of minerals. Moreover, 
it has a good index. 
