Reviews — Dr. C. Bnrckhardt — Argent'Dio-ChUian Cordilleras. 277 



derived for the shingle beach at Aldborovigh and Orford. Again, 

 in the description and explanation of the Chesil Bank we find that 

 the g-eological problems are by no means clearly brought before 

 the reader. Thus we are told that " The greater proportion of the 

 flints of which the bank is composed denote an inland rather than 

 a sea-cliff origin, and seem to point to the time of the breaking up 

 of the last great Ice Age, when the valleys and rivers \_sic] were 

 scooped out by the ice, and the floods due to its melting, and when 

 vast quantities of rock debris and gravel were carried to the coast." 



Those interested in the geological explanations of the beach will 

 do well to turn to the original works on the subject, and it would 

 liave been better had the author referred to Mr. Stvahan's Geology 

 of the Isle of Purbeck and Weymouth (Mem. Geol. Survey, 1898), 

 rather than to his remarks in a discussion on a paper by Dr. Vaughan 

 Cornish. Mr. A. R. Hunt has carried on many important researches 

 on wave action and marine deposits, and a fuller reference to his 

 labours might have been made. He is mentioned in the text, but 

 not in the index. The paper by Mr. Bristovv and Mr. Whitaker 

 on the Chesil Bank is noted under the names of H. W. Burton and 

 W. Whitaker. 



Fuller and more precise references to original sources of inform- 

 ation on our coasts and coast erosion would have added much to 

 the value of this work. As a record of the author's personal 

 observations on the methods of protecting our sea-border, and as 

 a record of the varying characters of our beach deposits, the work 

 will doubtless prove of considerable value and interest both to 

 engineers and sreolog-ical students. 



IV. — Geology of the Akgentino-Chilian Cordilleras. By 

 Dr. Carl Burckhardt. Part II. Profils geologiques trans- 

 versaux de la Cordillere Argentino-Chilienne. Folio. (La 

 Plata, 1900.) 



I^HE present work (issued by the Museum of La Plata, under the 

 direction of Dr. F. P. Moreno) embodies the stratigraphic and 

 tectonic results of an expedition made in 1897 by Dr. Burckhardt 

 and Dr. Leo Wehrli, the latter contributing a sketch of the physical 

 geography of the region, which exhibits many interesting glacial and 

 volcanic features.^ 



The rocks dealt with range from the Middle Lias to the Danian, 

 and without any distinct evidence of intermediate erosion. The 

 Jurassic rocks have long been known to form an important part 

 of the region, and Dr. Burckhardt finds in them, especially in the 

 Opalinian, Tithonic, and Berriasian, as well as in Lower Neocomian 

 divisions, clear evidence of an Alpine facies in the fauna. Many 

 forms in the Lower Oolites belong to the littoral zone, and the facts 

 in general do not favour Neumayr's views on climatic distribution. 



No evidence of Bathonian has been obtained, ))ut there are strata 

 which may represent this age, although they have not at present 



' A preliminary report by the authors was published iu 1897. 



