8 BOOKS PUBLISHED BY ME. VAN VOOEST. 



Manual of the Mineralogy of Great Britain and Ireland. 

 By EOBEET PHILIPS GEEG, F.G.S., and WILLIAM G. 

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



History of British Fossil Mammals and Birds. By Pro- 

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

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

 peds and Cetacea.' 8vo, with 237 Illustrations, <! 11s. 6d., or 

 large paper (royal 8vo), 3 3s. 



Description of the Skeleton of an Extinct Gigantic Sloth 



(Mylodon robustus). With Observations on the Osteology, 

 Natural Affinities, and probable Habits of the Megatherioid Qua- 

 drupeds in general. By EICHAED OWEN, F.E.S., &c. 4to. 

 1 12s. 6d. 



Geological Inquiry respecting the Water-bearing Strata 



of the Country around London, with reference especially to the 

 Water Supply of the Metropolis, and including some Eemarks 

 on Springs. By JOSEPH PEESTWICH, Jun., F.G.S., &c. 

 8vo, with a Map and Woodcuts, 8s. Qd. 



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

 Geology in the University of pxford. By SIE WILLIAM 

 JAEDINE, Bart. ; with a selection from his Printed and other 

 Scientific Papers. One Yol. Eoyal 8vo, 36s., Illustrated by Maps, 

 Geological Sections, Plates and Woodcuts. 



Omphalos. An Attempt to Untie the G-eological Knot. By P. H. 

 GOSSE, F.E.S. In this work the author aims to overthrow the 

 received conclusions of geologists as to the remote antiquity of 

 the earth, by the enunciation and illustration of a grand physical 

 law, hitherto unrecognized, the law of Prochronism in organic 

 creation. Post 8vo, pp. 376, with 66 Illustrations on wood, 

 10s. Qd. 



WORKS ON GENERAL NATURAL 

 HISTORY, &c. 



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

 fessor T. EYMEE JONES, E.E.S. Post 8vo, 544 pp., with 



8 Coloured Plates, price 18s. 



Humble Creatures: the Earth-worm and the Common 



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

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

 Illustrations by the Authors. Post Svo, price 3s. 6d. 



JOHN VAN VOOEiST, 1 PATEENOSTEE EOW. 



