64 REPORT—1848. 
White and Blue Wi/es—is merely the junction of the Astapus with the Nilus; and that, 
in reality, the confluence of Ptolemy’s two arms of the Nile, namely the White River 
and the Sobdt or River of Habesh, is in 9° 20’ N. lat., upwards of 6° beyond Khart- 
tim; and while establishing that these two principal arms of that river have their 
sources at the extreme eastern edge of the table-land of Eastern Africa, he showed, 
further, the existence of a third great arm of the Nile, namely the Bahr el Ghazal or 
Keiléh, which joins the central stream from the west in about 9° 20! N. lat., and 
which there is reason to regard as the Nile of Herodotus and other writers anterior 
to Ptolemy. 
In conclusion, Dr. Beke called attention to the journey undertaken by Dr. Biallo- 
blotzky into Eastern Africa, for the purpose of exploring the southern limits of the 
basin of the Nile; and he solicited subscriptions in support of this undertaking. 
Addition by the Author.—The Rev. Mr. Rebmann, of the Church Missionary So- 
ciety’s East-Africa Mission, has lately seut home an account of a journey made by 
him into the interior. Within 200 miles due west from Mombis he came to the 
eastern edge of the table-land, which thus appears to be much nearer to the coast 
than I had been led to conclude. Directly before him Mr. Rebmann saw a lofty 
mountain, named Kilimandjaro, the summit of which is covered with perpetuai snow. 
This mountain may be approximatively placed in 4° S, lat. and 36° E, long., and 
its elevation cannot well be less than about 20,000 feet. It is crossed by the road to 
the country of Mono-Moézi; and there is now scarcely room to doubt that it forms a 
portion of Ptolemy’s Mountains of the Moon (Moézi), the snows of which are de- 
scribed by that geographer as being received into the lakes of the Nile. It is by 
proceeding into the interior in this direction that Dr. Bialloblotzky may be expected 
to discover the sources of that river—See Atheneum, No. 1119, of the 7th inst.— 
April 14, 1849. [Mr. Rebmann’s Journal, with a Map, is since published in the 
Church Missionary Intelligencer for May 1849, vol.i. p. 12 et seq.] 
On the occurrence in the Tarentaise of certain species of Fossil Plants of the 
Carboniferous Period, associated in the same bed with Belemnites. By 
Mr. CHArRLes Bunsury. 
The fossil plants were stated to be in a very bad state for examination, being washed 
up together in a talcose schist, and often curiously distorted by the molecular action 
which the rock has undergone. In the Turin collections, Mr. Bunbury had made 
out nine species of Ferns, two Calamites, and three Asterophyllites, which he consi- 
dered identical with Carboniferous species; a conclusion formerly stated by M. 
Adolphe Brongniart. 
Gn a Boulder of Cannel Coal found in a vein of common bituminous Coal. 
By Stvarvine Benson of Swansea. 
Whilst the shaies and sandstones of the lower coal-measures of South Wales appear 
fo have been for the most part deposited or formed in comparatively quiet water, the 
Pennant series of rocks above them, which are easily traceable throughout the coal- 
field trots the greater hardness of their sandstones, contain frequent conglomerates 
of rolled pebbles of coal and ironstone, drifted plants, and occasionally small boulders 
of granite, with other proofs of drift to a considerable extent having occurred during 
their formation. 
The boulder, which is 13 inches long, 7 wide, and 3 deep, was found in a seam of 
common bituminous coal at Penclawdd near Swansea, which is in geological position 
one of the lowest in the Pennant series. In the subjacent measures some seams of 
cannel coal are known to exist about 700 yards below the Penclawdd vein, and lying 
conformably with it. If the boulders and drift, which occur throughout the lower 
portion of the Pennant series, were derived from the subjacent coal-measures, it might 
have arisen from a partial destruction of the south-west portion of those measures during 
the formation of the Pennant rocks; and if the boulders of granite are, as supposed, 
equivalent to that of Pembrokeshire, they would also point to the same line of drift. 
The writer concluded by remarking, that if the suggestion is admitted that these 
boulders are derived from the lower measures of the same coal-field, the inference 
in 
ait 
