8 BOOKS PUBLISHED BY ME. VAN VOOEST. 



Manual of the Mineralogy of Great Britain and Ireland. 



By ROBERT PHILIPS GREG, F.G.S., and WILLIAM G. 

 LETTSOM. 8to, with numerous Woodcuts, 15s. 



History of British Fossil Mammals and Birds. By Pro- . 

 fessor OWEN. Tliis volume is designed as a companion to that 

 by Professor Bell on the (Recent Mammalia) ' British Quadru- 

 peds and Cetacea.' 8to, with 237 Illustrations, £1 lis. 6d., or 

 large paper (royal 8vo), £3 3s. 



Description of the Skeleton of an Extinct Gigantic Sloth 



(Mylodon robustus). Witli Observations on the Osteology, 

 Natm'al Affinities, and probable Habits of tlie Megatherioid Qua- 

 di-upeds in general. By RICHARD OWEN, F.R.S., &c. 4to. 

 £1 12s. 6d. 



Geological Inquiry respecting the "Water-bearing Strata 



of the Country around London, with reference esjiecially to the 

 Water Supply of the Metropolis, and including some Remarks 

 on Springs. By JOSEPH PRESTWICH, Jmi., E.G.S., &c. 

 8vo, with a Map and Woodcuts, 8s. 6d. 



Memoirs of Hugh E. Strickland, M.A., Deputy Reader of 

 Geology in the University of Oxford. By SIR 'WILLIAM 

 JAE.D1NE, Bart. ; with a selection from his Printed -and other 

 Scientific Papers. One Vol. Royal 8vo, 36s., Illustrated by Maps, 

 Geological Sections, Plates and Woodcuts. 



Omphalos. An Attempt to Untie the Geological EJiot. By P. H. 

 G OSSE, E.R.S. In this work the author aims to overthrow the 

 received conclusions of geologists as to the remote antiquity of 

 the earth, by (ho cnimciation and Ulustration of a grand physical 

 law, hitherto vuirccognized, the law of Proclironism in organic 

 creation. Post 8vo, pp. 376, with 56 Illustrations on wood, 

 10s. Gd. 



WOEKS ON GENERAL NATURAL 

 ■HISTORY, &c. 



The Aquarian Naturalist : a Manual for the Sea-side. By Pro- 

 fessor T. RYMER JONES, E.R.S. Post 8vo, 544 pp.; with 



8 Colom-ed Plates, price 18s. 



Huinble Creatures: the Earthworm and the Common 



Housefly. In Eight Letters. By JAMES SAMUELSON, as- 

 sisted by J. A. HICKS, M.D. Lond., F.L.S. With Microscopic 

 Illustrations by the Authors. Post 8vo, price 3s. Gd. 



JOHN VAN VOORST, 1 PATERNOSTER ROW. 



