38 Reviews — Barrande^s Cephalopoda. 



cliert gravel intermingled with ferruginous clay of a yellow colour, 

 and interstratified with seams of sandy clay, without shells or other 

 animal-remains, as far as is at present known. There are a few 

 much-rolled pebbles of quartz ; of a hard dark-grey siliceous rock ; 

 and of chalk flints, mingled with the chert fragments, many of 

 which are angular or subangular. It has been cut into for ballast 

 for the railway, and about half has been removed in the last fifteen 

 years, exposing a section of from 40 to 50 feet in depth. The bottom 

 of the pit is on a level with the rails, which are a few feet above the 

 river, and about 150 feet above the level of the sea, about six miles 

 distant. The chert gravel was probably derived from the Greensand 

 which caps the hills inclosing the valley. 



In this gravel during the present year have been found numerous 

 implements of the usual Paleolithic forms, made of very dark brown 

 chert. Some of them have been much rolled, but the majority are 

 quite sharp and uninjured. Many have been picked up on the rail- 

 way after the gravel has been used for ballasting the line. It is 

 unfortunate that none have been found in situ by any one except the 

 workmen, but from the nature of the gravel it is very difficult to 

 distinguish them from the surrounding mass, until they have been 

 washed clean by the rain. Some have been deposited in the Black- 

 more Museum at Salisbury, and a large number bave been secured 

 for the Albert Memorial Museum at Exeter. 



Note. — We have been favoured by Mr. W. S. M. D'Urban with 

 a set of three photograj)hs, 8vo. size, containing admirable repro- 

 ductions of the forms of 36 of these Paleeolithic chert implements 

 from the Eiver-drift Gravel of the Valley of the Axe — now pre- 

 served in the Exeter Museum. They convey an excellent idea of 

 the form of these unpolished implements, which remind one of the 

 elliptical form of Eiver-drift implements from Icklingham, and others 

 of the acutely-pointed and ovate-pointed flint-implements from Eiver- 

 drift, Hoxne, Norfolk, figured in the Geol. Mag. 1873, Vol. X. pp. 

 4-10, Plates I. and II., copied from "Ancient Stone Implements, 

 etc., of Great Britain;" by John Evans, D.C.L., F.E.S., V.P.G.S., 

 1872, 8vo. (see Fig. 421, p. 490, Fig. 449, p. 519, and Fig. 450, 

 p. 520). Mr. D'Urban informs us that "copies of these photographs 

 may be obtained at Is. %d. each, or 4s. 6d. the set, which is cost 

 price." — Edit. Geol. Mag. 



ia:E"V"iE^ws. 



Cephalopodes. Etudes Generales ; Extraits du Systems Siltjrien 

 Du Centre de la Boheme. Par Joachim Barrande. 8vo. pp. 

 253, 4 plates and several tables. (Prague, 1877.) 

 N this memoir M. Barrande gives us a most interesting, and in- 

 structive, summary of his valuable researches on the embryology, 

 organization, distribution and range of the Palseozoic Cephalopods, 

 with additional notes on the Secondary, Tertiary, and existing 

 species. The greater part of his observations are, however, founded 

 on an examination of the Bohemian forms, 1127 in number, or 



