182 Reviews — Br. C. W. GumbeVs Alpine Geology. 



of the real Ganoid Fishes, lucidly and systematically. The recent 

 Lepidosiren and Protopterus are then described clearly and concisely. 

 The study of the genus Ceratodus is taken up at page 18 ; and, after 

 an illustrated account of the recent form, the fossil teeth from the 

 Trias (one), Khsetic, and Great Oolite (one), (the plates for which 

 hardly do justice to the specimens), are fully described and figured. 



Another valuable and longed-for Monograph had its commence- 

 ment in 1878, namely, that on the Ammonites of the British Lias by 

 Dr. T. Wright. Eight excellent plates of good specimens of the 

 Ammonites, by A. Gawan, are published with this portion of the 

 Monograph ; but the text forms part only of the Geological Intro- 

 duction, describing the succession and characters of the several strata, 

 from the Rhaetic upwards. The Ammonites are referred to under 

 the new generic names of JEgoceras, Arietites, etc ; and the Lias is 

 described according to its successional zones, as characterized by 

 Ammonitic species, namely, Planorbis-zone, Angulatum-zone, Buck- 

 landi-zone, Turneri-zone, etc. The Continental Lias is throughout 

 carefully brought into comparison with that of Britain, and thus a 

 vast amount of geological information is afforded. 



Additional Jurassic Brachiopoda have still turned up, and new 

 observations on species already described have had to be made, so 

 that the persistent energy and cultivated experience of our friend 

 T. Davidson, F.R.S., had abundant matter at hand for the Sup- 

 plement to his magnificent Monograph of British Brachiopoda ; and 

 we have No. 2 of part ii. of vol. iv., with nearly 100 pages and 13 

 plates, in 1878. An elaborate Table (of nine pages) shows the dis- 

 tribution of Triassic, Liassic, and Oolitic Brachiopoda in Britain ; 

 and serves also as an Index to the Supplement, and in some measure 

 to the Monograph also. These plates, like those already given, have 

 been drawn by the accomplished author himself. 



" A Preliminary Treatise on the Belation of the Pleistocene 

 Mammalia to those now living in Europe," by Professor W. Boyd 

 Dawkins, was published in 1878, as " Part A " of the Monograph on 

 the Pleistocene Mammalia of Britain, but a considerable part of it 

 had been written in 1872. It is of very great interest, as well to the 

 general reader as to the geologist. Chapter i. gives the definition of 

 the successive ages, from the Historic back to the divisions of the 

 Tertiary Period. Chapter ii. treats of the Wild and Domestic 

 Animals of Great Britain and Ireland in Historic Times, especially 

 the Cattle, and the effects made upon the inhabitants by changes in 

 land, marsh, forest, etc. ; a list of these Historic Mammalia is added. 

 Chapter iii. notices the wild and domestic animals of the Continent 

 during Historic Time, climatal changes, and conclusions. — T. B. J. 



III. — A Short Introduction to Alpine Geology. By Professor 

 Dr. C. W. Gu'mbel, etc., etc. With numerous Illustrations, 

 small 8vo. [Kurze Anleitung zu geologischen Beobachtungen 

 in den Alpen ; etc., etc.] 



THIS very concise, clear, and yet fully expressive account of 

 Alpine geology is really an admirable little geological manual, 

 based on the structure and physical geography of the Alps. It is 



