— 61 — 



dalla Temi Napolitana, t. 1, quad. 2. Napoli, 1844, in-8° 

 de8p. 



582. Forbes (J. D. ). On the Theory and construction of 

 a seismometer or instrument for measuring Earthquake 

 shocks, and other concussions. — Trans, of the R. soc. of 

 Edinburgh, vol. 15, p. 219-228, 1 pi., 1841. Ex. d'Ettings- 

 hausen et de Schumacher. 



583. — On the volcanic Geology of the Vivarais. — Ibid., 

 vol. 20, trad, par M. Bertrand de Doue, en extraits dans 

 les Ann. de la Soc. d'gric. du Puy, t. 15, 2' sem. 1850, 

 p. 779-799. 



584. — On the temperatures and geological Relations of 

 certain hot Springs, particularly those of the Pyrenees. 

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585. — Illustrations of the viscous Theory of Glacier 

 motion. — Ibid., 1846, p. 143-210, 8 pi. Ex. d'Arago. 



586. — Forchharamer (Gio). On some Changes of Le- 

 vel which have taken place in Denemarck during the pre- 

 sent Period. — Trans, of the geol. Soc. of London, vol. 6, 

 p. 157-160. 1837. 



587. Forster ( Th. ). He nouvelle sortie de la mer pr^s 

 de Tercere, en 1720. — Philos. trans., an 1722, n° 372. Gi- 

 belin, t. 1, p. 66-68 , et Ludrini, p. 68-70. 



588. Forster (John). A letter concerning an Earthquake 

 at Taunton. — Philos. trans., an 1748 , t. 45, n° 488, p. 

 398-400. Ins^ree dans yl chronological Account of Earth- 

 quakes, p. 69-71. 



589. Forstner (A. von). Einige Betrachtungen ueber 

 das Weltgebaude. Berlin, 1825, in-18 de 86 p. 



590. Fortis ( abb^ ). Delia valle vulcanico-marina di 

 Ronca nel territorio Veronese memoria orittografica. Ve- 

 nezia, 1778, in-4'' de 65 p., 4 pi. 



591. — Memoires pour servir a I'histoire naturelle et 

 principalement a I'oryctographie de I'ltalie et des pays ad-' 

 jacents. Paris, 1802, 2 vol. in-8°. 



