234 Brief Notices. 



the Bristol Channel and the Severn as far north as Tites Point, hut 

 inland the descriptions take in Frocester near Stroud, and thence 

 southwards they include Bath, Bradford-on-Avon, Westbury, and 

 the country near Frome, together with the Mendip Hills. 



In this highly interesting district a great number of geological 

 formations are met with from the Silurian to the Upper Oolites, with 

 sundry igneous rocks, and Post-Tertiaiy deposits including those of 

 caverns and raised beaches. 



The story of the great physical changes indicated by the strata and 

 associated volcanic rocks is briefly and pleasantly told in the 

 Introduction by Professor Lloyd Morgan, Avliose essay touclies on the 

 poetic aspect of geology and is well calculated to stir up enthusiasm. 



Then follow the practical instructions on excursions, aided by useful 

 diagram-sections and maps, all indicative of the author's wide and 

 exceptional knowledge of petrography, stratigraphy, and palaeontology. 



Of late yeai's special attention has been given to the Carboniferous 

 Limestone, as well as to the volcanic rocks of Mendip aiid of the 

 coast near Weston-super-Mare. The particulars given of the zonal 

 divisions in the Carboniferous will be appreciated, but for the sake of 

 the j-ounger students it would have been well to indicate the classes 

 of organisms to which belong such forms as Caninia, Semimila, 

 Syringothyris, etc. The presence of arborescent markings in the 

 Carboniferous Limestone is interesting; the author refers to them 

 as ' Cothara Marble ' bauds, but here the use of the terra Landscape 

 Marble would have been better. Cotham Marble has its own horizon 

 in the Ilhsetic Beds, and if there liad been good local sections at 

 Cotham the author would no doubt liave guided us to them. He 

 wiselv, however, gives no account of temporary exposures. The 

 famous section at Aust gives the best section of the strata. The Lias 

 and Inferior Oolite also are seen in various noted localities, and those 

 who are interested in hemercB will find an enumeration of thirty-one 

 for their guidance. They are, however, for the specialist, and the 

 student will find the ordinary groupings duly indicated. The names 

 Upper and Lower Lias might have been introduced on the Table II. 



IX. — Brief Notices. 



1 . Geological Map of Central Europe. — A small colour-printed map 

 of this region, on the scale of 100 miles to 1 inch, has been published 

 by Mr. Stanford (1911), price 5s. It shows the leading geological 

 systems and intrusive igneous rocks, under twelve tablets : Miocene 

 and Pliocene, Eocene and Oligocene, Carboniferous and Permian, 

 Upper Silurian and Devonian, being respectively grouped together. 

 Certain pre-Cambrian or Archaean rocks are classed as ' Brioverian ', 

 which seems too local a term for such a map, while another tablet 

 indicates "Crystalline schists and gneiss". The topography is clear, 

 showing the rivers, mountains, and principal towns, but no railways. 

 and the colours for the most part are distinctive, although here and 

 there, in the smaller areas, numbers printed on map and tablets would 

 have been an advantage. The nuip includes Dublin, Hull, and Kiel 

 on the north, Warsaw and Belgrade on the east, Brindisi, northern 



