161 



PHYSICAL GEOLOGY. 



1. VOLCANIC PHENOMENA; METAMORPHISM ; 

 UNDERGROUND TEMPERATURE ; CHANGES OF 

 LEVEL; MOUNTAIN-BUILDING. 



Alexandeb, T. M. The newly discovered Crater of Maine. Amer. 



Journ. ser. 3, vol. vii. pp. 525, 526. 

 From a letter to the ' Hawaiian Gazette.' 



Anon. Oscillazione delle coste di Dalmazia. [Oscillations of the 



Coast of Dalmatia.] Boll. R. Com. geol. Ital. pp. 57-60. 



Koman roads and villas in several places along the coast are now 



seen below the sea, showing that the land has sunk. Peninsulas have 



become quite detached from the land ; and tracts that were once thickly 



inhabited, have by the change of level become so marshy and malarious 



as to be greatly depopulated. E. B. T. 



Bertrand, G. Etudes sur les Yolcans. Notes recueillees au cours 



de M. Ch. Sainte-Claire Deville. Bull. Soc. Indust. min. St. 



Etienne, 2 ser. t. iii. p. 65. 



BiTTNER, A. Beobachtungen am Vesuv. [Observations on Vesuvius.] 



Verb. k.-k. geol. lleichs. pp. 287, 288. 

 A letter. 

 Black, J. M. An Account of the Eruption of Mount Vesuvius of 



April 1872. Proc. Geol. Assoc, vol. iii. no. 6, pp. 253-265. 

 Narrates the progress and effects of the eruption. 



BoiT^, Dr. A. Ueber den Begriff und die Bestandtheile einer 

 Gebirgskette, besonders iiber die sogenannten Urketten, sowie 

 die Gebirgs-Systeme-Vergleichung dor Erd- und Mondes-Ober- 

 flache. [On the notion and composition of a Mountain-range, 

 particularly the so-called Primitive ranges ; also on the com- 

 parison between the Systems of Mountains on the Earth and 

 Moon.] Sitzb. k. Ak. Wiss. math.-naturw. Classe, Abth. i. 

 Bd. Ixix. Heft 3, pp. 237-300. 

 In discussing the formation of mountains, Laplace's theory of the 

 origin of the solar system is made the basis of all reasoning on the 

 past and present state of the earth : a cooling surface and heated 

 interior is assumed. After glancing at various abandoned notions 

 concerning the crystalline schists, the author notices their occurrence 

 in most of the chief mountain-ranges ; they are shown to be in- 

 timately connected with Palujozoic beds ; indeed fossils have been 

 1874. M 



