MUR * 368 
Murchison (Str Roderick Impey). On the meaning originally attached 
to the term “ Cambrian System,” and on the evidences since ob- 
tained of its being geologically synonymous with the previously 
established term ‘‘ Lower Silurian.” (Tract.) 2 copies. — 
8vo. London, 1847. 
—. On the development of the Permian System in Saxony, as com- 
municated by Professor Naumann. (Tract.) 2 copies. 
8vo. London, 1849. 
—. On the geological structure of the Alps, Apennines, and Car- 
pathians, etc. (Tract.) 2 copies. 8vo. London, 1849. 
‘Abstract.| (Tract.) 8vo. London, 1849. 
——. Memoria sulla struttura geologica delle Alpi, degli Apennini 
e dei Carpazi. Traduzione ed appendice sulla Toscana dei Cav. P. 
Savi e G. Meneghini. 8vo. Florence, 1850. 
—. On the distribution of the Superficial Detritus of the Alps, as 
compared with that of Northern Europe. (Tract.) 2 copies. 
8vo. London, 1850. 
——. On the Earlier Volcanic Rocks of the Papal States, and the 
adjacent parts of Italy. (Tract.) 2copies. 8vo. London, 1850. 
——. On the Vents of Hot Vapour in Tuscany, and their Relations to 
Ancient Lines of Fracture and Eruptions. (Tract.) 2 copies. 
8vo. London, 1850. 
——. Additional Remarks on the Deposit of Gtningen in Switzerland ; 
with a list and description of the Silurian Fossils of Ayrshire, by J. 
| W. Salter. (Tract.) 8vo. London, 1851. 
—. On the Distribution of the Flint Drift of the South-east 
of England, to the south and north of the Weald, and over the 
surface of the South Downs. (Tract.) 2 copies. 
8yvo. London, 1851. 
—. On the former Changes of the Alps. (Tracts.) 
| Svo. London, 1851, 
—. On the Origin of the Mineral Springs of Vichy. (Tract.) 
| Svo. London, 1851. 
——. On the Slaty Rocks of the Sichon; and on the origin of 
_ the Mineral Springs of Vichy. (Tract.) 2 copies. 
8vo. London, 1851. 
—.. Ueber die ilteren vulkanischen Gebilde im Kirchenstaate und 
uber die Spalten, welchen in Toscana heisse Diimpfe entsteigen, etc., 
deutsch von G. Leonhard. (Tract.) 8vo. Stutigart, 1851. 
—. On the Anticipation of the Discovery of Gold in Australia ; with 
a general view of the conditions under which that metal is distri- 
buted. (Tract.) 8vo. London, 1852. 
Abstract. (Tract.) 8vo. London, 1852. 
——. On the meaning of the term “Silurian System,” as adopted by 
Geologists in various countries during the last ten years. (‘Tract.) 
8vo. London, 1852. 
—. On the Silurian Rocks of the South of Scotland; with a list and 
description of the Silurian Fossils of Ayrshire, by J. W. Salter. 
(Tract.) 8vo. London, 1852. 
——. On some of the Remains in the Bone-bed of the Upper Ludlow 
Rock. (Tract.) 8vo. London, 1853. 

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