PHYSICAL SCIENCE. 15 



SMYTH (Captain William Henry) A CYCLE OF 

 CELESTIAL OBJECTS, Vol. I., Prolegomena, 516 pp., 

 with about 50 engravings ; Vol. IL, the Bedford Catalogue, 

 560 pp., with about 60 engravings of nebulce, etc., 2 vols., 8vo, 

 doth, iinait, scarce, 1844, ;^3 3s. 



This is the original and best edition. The reprint (iSSi) contains the Bed- 

 ford Catalogue ; that is one volume only of the Cycle. 



SOWERBY (J.) British Mineralogy, 550 coloured plates, 

 with descriptions of the Minerals of Great Britain, 5 vols., 

 royal 8vo, half-calf, 1S04-17, £6. 



SUSSEX.— The Geology and Fossils of the Tertiary and Cre- 

 taceous Formations of Sussex, by the late FREDERICK 

 DIXON, Esq., F.G.S. ; new edition, revised and augmented 

 byT. RUPERT JONES, F.R.S., F.G.S., aided by PRO- 

 FESSOR OWEN, C.B., Sir P. de M. Grey-Egerton, Bart., 

 M.P., Prof. T. Bell, F.R.S., W. Carruthers, F.R.S., T. 

 Davidson, F.R.S., R. Etheridge, F.R.S., J. Evans, F.R.S. , 

 Prof. J. Morris, F.G.S., E. T. Newton, F.G.S. , W.J. Sollas, 

 F.G.S., Henry Woodward, F.R.S., T, Wright, F.R.S., and 

 others, pp. 24 and 462, with Geological Map and Section of 

 Borings, also 64 sheets of fine plates of Fossils, including a 

 selection from those published in * Mantell's Fossils of the 

 South Downs,' new edition, royal 4to, cloth, Brighton, 1878, 

 £2 iss. 



WADSWORTH (M. E.) Lithological Studies— A Descrip- 

 tion and Classification of the Rocks of the Cordilleras, with 8 

 plates, containing 48 coloured sections, 4to, Cambridge, U.S., 

 1884, ;^l los. 



The plates are beautiful microscopical enlargements of thin sections of the 

 rocks. 



