90 Reviews—Wabana Iron Ore of Newfowndland. 
VITI.—Wasawa Iron Orne or Newrounpranp. By A. O. Hayes. 
Canada, Geological Survey Memoir 78, 1915. 
N this beautifully illustrated memoir a detailed account of the 
I stratigraphy and petrology of the Lower Ordovician oolitic iron- 
ores of Wabana is placed on record. An unusually complete series of 
analyses has been made, confirming the petrographic identification of 
the chief minerals present—hzmatite, chamosite, and siderite. The 
writer concludes that the iron-ore occurs as a primary bedded deposit 
in a series consisting mainly of shales and sandstones. Pisolitic iron- 
ores have been found in the Llandeilo of Wales by W. G. Fearnsides, 
who, however, has urged their probable metasomatic origin. The 
writer gives a summary of the occurrences of other iron-ores of 
similar character, and notes the varying interpretations of their mode 
of origin, some authors favouring original precipitation, others holding 
the replacement theory. 
IX. Sxippaw.—In the Proceedings of the Liverpool Geological 
Society (xii (2), 1915), Mr. Jas. W. Dunn gives the results of many 
years work on Sheet No. 101 8.E. (Geol. Survey, 1 inch). He does 
not draw up any conclusions, so we must refer the reader to the 
paper for the petrology, with which it largely deals. 
REPORTS AND PROCHEHDIN GS. 
Liverroort GronocicaL Socrery. 
December 14, 1915.—J. H. Milton, Esq., F.G.S., F.L.S., President, 
in the Chair. 
The following paper was read :— 
‘‘On the Igneous and Pyroclastic Rocks of the Berwyn Hills 
(North Wales).”’ By the late Thomas Henry Cope, F.G.S. Edited 
by Charles B. Travis. ; 
This paper represents the results of the work of the late T. H. 
Cope, F.G.S., during many years, supplemented by contributions by 
the editor. The area described, about 150 square miles in extent, 
includes portions of the counties of Denbigh, Merioneth, and Mont- 
‘gomery. The sedimentary formations present range in age from the 
Llandeilo to Upper Tarannon and Llandovery, and have been subjected 
to cross-folding at two periods of time widely separated, giving rise 
to a periclinal dome which has been greatly denuded. 
The igneous and fragmental rocks, to which attention has been 
chiefly devoted, occur at various horizons in the Ordovician sediments, 
and comprise acid and intermediate lavas, intrusive sheets of inter- 
mediate and basic composition, and acid and intermediate fragmental 
deposits. ‘The most important pyroclastic rocks are three strongly 
marked bands of rhyolitic tuffs and agglomerates (‘‘ Peripheral 
Series”’), of Upper Bala age. They are traceable most clearly on 
the northern and western margins of the district, and correspond to 
the ‘‘ Ash Beds ”’ of the Geological Survey. In the southern portion 
