52 GEOLOGY. 



lias been pierced by several borings in search of water, which have 

 proved the existence of the Bunter Sandstein formation below. The con- 

 ditions of the stratification being similar to those observed at Stassfurt, 

 Leopoldshall, and Thiede, led to the sujiposition that a deposit of potash 

 and rock-salt might be found. A boring put down to the depth of 

 286-6 metres has already proved a thickness of 73*2 metres of salt, of 

 which the upper section of 20-6 metres contains a mixture of potash-, 

 soda- and magnesia-salts, similar to that of Stassfurt, though on a 

 smaller scale. H, B. 



Bischof, F. Die Steinsalzwerke bei Stassfurt. [The Stassfurt 

 Eock-salt works.] Halle. 



Botella, Federico. La Ciudad Encantada, Hoces, Salegas y Torcas 



de la Provincia do Cuenga. [The Enchanted City, Province of 



Cuenga.] An. Soc. Espan. Hist. Nat. vol. iv. part 2 ; and separately 



published, Madrid. 



Describes some fantastically shaped rocks near Cuenga, known as 



the " Enchanted City." Investigates their origin, and explains the 



causes of other erosive phenomena of that locality. A map of the 



valley of the river Huecar, two plates with sections and sketches, and 



two photographic views from " the Enchanted City " accompany this 



paper. J. M'P. 



Botti, U. Sulle rocce impastate entro al Serpentine. [Serpentine 

 conglomerate, &c.] Boll. li. Com. geol. Ital. vi. pp. 63-73 (wood- 

 cut). 

 On the occurrence of a conglomerate, with fragments of various rocks 

 cemented by a serpentinous paste ; with notes on the geology of the 

 mountains near Pontremoli and the Magra valley. E. B. T. 



Bone, Ami. Sur les gites de sel gemme de la Eoumanie et sur les 

 gres Carpathiques. [On the Eock-salt deposits of Eoumania and 

 on the Carpathian grits.] Bull. Soc. Geol. Finance, 3 ser. t. iii. 

 pp. 52-54. 

 Eejoinder to M. Coquand's remarks [sec Geological Eecoed for 1874, 

 p. 54]. The writer restates his views as to rock-salt deposits being for 

 the most part due to submarine brine -springs, accompanied by ejections 

 of clayey marls, not to the evaporation of inland seas. The next point 

 is as to the age of the Carpathian or Yiennese grits, some of which are 

 undoubtedly Cretaceous, whilst some are of the age of the Swiss Flyscli, 

 and others are pre-Cretaceous. Points out the present state of un- 

 certainty on this subject. G. A. L. 



. Einiges zur palao-geologischen Geographic. [Some points of 



Palaeo-geological Geography.] Vienna. 



Boutillier, Louis. N'otice necrologique sur M. Antoine-Frangois 



Passy. [Obituary notice of M. Passy.] 32 pp., Boueii. 

 Gives an account of that geologist's work in the stratigraphical 

 geology of various parts of France. 



