228 THE POPULAR SCIENCE MONTHLY. 



BOOKS AND MAPS SERVICEABLE. 



General Topographic Maps. — Baedeker's guides are best in this respect, for 

 Rbioe and Alps sufficient. Every nation has military maps covering more or 

 less of Europe. The Austrian map covers most of Europe, and is good. 



(1) See the Preis-Verzeichniss of R. Lechner in Vienna (Wien). Also — 



(2) Stanford's Tourist Catalogue, 1884, with addenda and corrigenda since 

 (gratis). This firm's specialty is geologic and geographic publications. Tlie 

 guide to the Isle of Wight by M. W. Norman, 1887, may not be catalogued 

 yet. 



(3) For geologic maps see National Geological Surveys of Europe, by "William 

 Topley {U.), 1885, London, Trtibner & Co. 



Note that the official surveys are not always strictly confined within bound- 

 ary-lines. So the Austrians have done much work in the Balkans, and the 

 earlier French survey of De Beaumont covers one's route up to Italy or the 

 Tyrol. Many of the books and geologic guides mentioned below include or 

 accompany maps. Such are starred. Of bulky works on European geology 

 the following are the best : 



(4*) Ramsay, Physical Geology and Geography of Great Britain (lis. 6iZ.), 

 1878, E. Stanford, London. Just out is Woodward's Geology of England and 

 Wales, 1887, 18s. 



(5*) Geikie, A., Text-Book of Geology, 1882. 



(6) De Lapparent, Traits de Geologie, 1885, F, Savy, Paris. (The last seven 

 hundred pages contain a full account of the formations in various countries, with 

 references.) 



(7) Mourlon, Geologie de la Belgique, 1881, F. Savy, Paris. (Purely local.) 



(8) Credner, H., Elemente der Geologie, 1883, Leipsic, Engelmann. 



(9) Roth, J., Allgemeine und chemische Geologie, 1879-1883, W. Herz, 

 Berlin. (The second volume, just complete, is full of petrographic localities 

 and references.) 



(10) M. Neumayr, Erdgeschichte (16 marks), 1886, Bibliog. Institut, Leipsic. 

 Very fresh and finely illustrated. 



(11) Suess, Das Anthtz der Erde. 



(12*) Von Hauer, F., Geologie (as applied to Austria), 1878, A. Holder, 

 Vienna (Wien). 



Of smaller transportable works may be mentioned the following: 



(13*) Geikie, Outlines of the Geology of the British Isles (2s.), 1876, W. & 

 A. K. Johnston, Edinburgh. 



(14) Geology of Belgium and the French Ardennes (Is. Qd.), 1885, Stanford, 

 London. (By various writers ; includes rough sketch-map and references to 

 Dewalque's map, etc.). 



A joint excursion in the environs of Brussels was made by the Geologic and 

 Malacologic Societies, reported by A. Rutot, 1881. A separate reprint of this 

 would be the best guide. Such reprints are valuable guides, and are often ad- 

 vertised in catalogues of second-hand books, or may also often he obtained of 

 the secretaries of the various societies or the authors. 



(15*) The agricultural geology of Belgium, sketched in 14, is treated more 

 fully by Malaise and De Laveleye. 



(16*) On the geology of the Rhine (Baedeker has something), Von Dechen 

 has a series of Geognostische Fuhrer in das Siebengebirge, Vorder-Eifel, Hinter- 

 Eifel, etc. In society proceedings, various papers by WolfF, Hubbard, Las- 

 peyres, etc. 



