Reports and Proceedings. 509 
and thus the series of faults east of Dudley (of which the Dudley 
Port trough faults are important features) were mainly produced. 
The igneous bosses at Pouk Hill, Barrow Hill, Dudley, and other 
places were fully considered, and their relationship traced to the 
faults in the several localities. The whole paper has an in- 
timate bearing upon the mining interests of the district, and satis- 
factorily explains many of the peculiar dislocations by which it is 
traversed. 
Mr. Aiport called attention to the chemical analysis of Mr. D. 
Forbes, which appeared to prove that the South Staffordshire 
igneous rocks belong to the Secondary period. He considered that 
the author’s theory of the complete denudation of the Red rocks 
was very probable, &s such instances are not wanting in other 
formations. 
Mr. L. P. CAPEWELL read a paper ‘on the Metal Tungsten, its 
chemical combinations, and its alloys with iron and steel.’ Speci- 
mens of wolfram, tungsten, deutoxide and sesquioxide of tungsten, 
chlorides and sulphides of tungsten, and tungstate of soda were ex- 
hibited. Referring to the alloy of tungsten and steel, the author 
showed specimens which were exceedingly hard, and much more 
compact than ordinary steel. It was stated that this alloy will be 
invaluable for making drilling instruments, &c., where great hard- 
ness is indispensable. 
The next paper was by Mr. Caartes Kettey, on ‘ The Dudley 
Silurian Rocks and their Fossils; remarks on the confusion existing 
in published lists and descriptions, with tables showing the dis- 
tribution of the principal fossils.’ This paper had special reference 
to the proper classification of a bed of shale lying immediately above 
the Wenlock Limestone of Dudley, and which has yielded some of 
the most interesting and beautiful of the organic remains from that 
district. The principal places where it has been exposed are the 
Dudley railway-tunnel, at the reservoir north of the Wren’s Nest, 
at Spring House, and at Old Park, on the eastern side of the Wren’s 
Nest. Unfortunately there are no good natural sections of it, for 
while two bands of limestone are well exffosed in the caverns and 
at other points on the Wren’s Nest and the Castle Hills, the only 
section of this overlying shale is that at the railway station, Dudley. 
References to published descriptions show some confusion as to the 
name and physical relationship of this shale. In some it is classed 
as Lower Ludlow, and in others as Wenlock shale. Similar con- 
tradictions exist as to the localities of the fossils. Sir Roderick 
Murchison, Prof. Jukes, Mr. J. W. Salter, and the Dudley Geo- 
logical Society, have in published works placed this shale in the 
Ludlow formation. The Geological Survey Map, the Jermyn Street 
Catalogue, and Professor Morris, are named as authorities for the 
opposite classification. "That great confusion must arise from the 
present uncertainty as to which formation this bed really ought to 
be placed in, is evident, and hence the author has made a critical 
examination of the fossil contents of the deposit, and has carefully 
compared the lists with the organic remains found in the under- 
