= 
e 
Richardson (Ralph). On Peat as a substitute for Coal. 
8vo. Hdinburgh, 1873. 
RIC 429 
—. A Tale of Ages. 8vo. Edinburgh, 1874. 
—. The Ice Age in Britain, considered in relation to the Depth of 
the North Atlantic Ocean. (Tract.) Svo. Edinburgh, 1876. 
- Richardson (William). A Letter on the alterations that have taken 
place in the structure of rocks, on the surface of the basaltic 
country in the counties of Derry and Antrim. (Tract.) 
4to. London, 1808. 
—. Letters to the Rey. J. Dubourdieu on Zeolite and Ochre; on the 
basaltic productions, &c. of the county of Antrim ; and an Itinerary 
[of a journey through part of the county of Antrim]. (Tract.) 8vo. 
—. An “Appendix No. 1” on Irish mineralogy, &ec. 
Svo. No date. 
_—. Account of the Peninsula of Portrush. (Tract.)  8vo. Newry. 
Letter to the Countess of Gosford, to which is added a minute 
account of the materials and arrangement of our strata, for sixty 
miles on either side of Gosford Castle, in a north and south direc- 
tion. (Tract.) Svo. Newry, 1816. 
—. —. 2nd letter. (Tract.) 8vo. Newry, 1816. 
—. On the similitude, and difference, in the original formation of 
the Island of St. Helena, and the basaltic districts in the county of 
Antrim, etc. (Tract.) 8vo. Newry, 1816. 
——, Remarks on Mr. Whitehurst’s inquiry as to the Original State 
and Formation of the Earth. (Tract.) 8vo. Newry, 1816. 
A description of the Basaltic coast from: Magilligan to Glenarm. 
(Tract.) 8vo. Newry, 1817. 
——. Observations on Memoirs published by the Geological Society, 
respecting the North-eastern Counties of Ireland. (Tract.) 
8vo. Newry, 1817. 
Richter (Reinhard). (Beitrag zur Paliontologie des Thiiringer-Waldes.) 
Die Grauwacke des Bohlens und des Pfaffenberges bei Saalfeld. I. 
Fauna. (Tract.) Ato. Dresden and Leipzig, 1848. 
Richter (Th.). See Pratrner (K. F.). 
Richthofen (Ferdinand von). Ueber die Bildung und Umbildung 
einiger Mineralien in Sid-Tirol. (Tract.) 8vo. Vienna, 1858. 
First preliminary notice of Geological Explorations in China. 



(Tract.) 2 copies. 8vo. Philadelphia, 1869. 
——. China. Ergebnisse eigener Reisen und darauf gegriindeter 
Studien. Band I. Ato. Berlin, 1877. 
-——, See Haver (Franz von). 
Rickard (F. Ignacio). A mining journey across the Great Andes. 
8vo. London, 1863. 
——. The Mineral and other resources of the Argentine Republic (La 
Plata) in 1869. Svo. London, 1870. 
Ricketts (Charles). Essays on Physical Geology. 8vo. Liverpool, 1873. 
——. The Metamorphic Rocks of the Malvern Range, and the strata 
derived from them. (Tract.) 8vo. Liverpool, 1874. 
=——. The Cause of the Glacial Period, with reference to the British 
Isles. (Tract.) 8vo. London, 1875. 
