8 BOOKS PTJLIBSHED BY ME, VAN VOORST. 



Elementary Course of Geology, Mineralogy, and Physical 



Geography. By DAVID T. ANSTED, M.A., F.E.S., F.G.S., 

 &c., Consulting Mining Engineer, Honorary Fellow of King's 

 College, London, Lecturer 011 Mineralogy and G-eology at the 

 H.E.I.C. Mil. Sem. at Addiscombe, late Fellow of Jesus College, 

 Cambridge. A Second Edition, post 8vo, with many Illustra- 

 tions, 12s. 



The Ancient World. By Professor ANSTED. Second 



Edition, post 8vo, 10s. Gd., with 149 Illustrations. 



" The work may be described as an outline of the history of vegetable and 



animal life upon the globe, from the early age when there were only 



sea-weeds and marine invertebrates as yet in existence, down to the era 



when the mammals received among them the king of species, Man. By 



his intimate acquaintance with the subject, and power of arrangement 



and description, Professor Ansted succeeds in producing a narration, 



which tells in its entire range like a romance." Manchester Examiner. 



Gold-Seeker's Manual, By Professor ANSTED. Fools- 

 cap 8vo, 3s. Qd. 



Geologist's Text-Book. Chiefly intended as a Book of 

 Eeference for the Geological Student. By Professor ANSTED. 

 Foolscap Svo, 3s. Gd. 



Notes on the Geology and Chemical Composition of the 



various Strata in the Isle of Wight. By CAPTAIN L. L. 

 BOSCAWEN IBBETSON. With a Map in Belief, coloured 

 Geologically, Svo, 7s. Gd. 



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.' Svo, with 237 Illustrations, 1 11s. Gd., or 

 large paper (royal Svo), 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. Qd. 



Geological Inquiry respecting the Water-hearing Strata 



of the Country around London, with reference especially to the 

 Water Supply of the Metropolis, and including some Remarks 

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

 Svo, with a Map and Woodcuts, 8s. Gd. 



Omphalos. An Attempt to Untie the Geological Knot. 

 By P. II. GOSSE, F.E.S. In this work the author aims to over- 

 throw the received conclusions of geologists as to the remote an- 

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

 physical law, hitherto unrecognized, the law of Prochronism in 

 organic creation. Post Svo, pp. 376, with 50 Illustrations on 

 wood, 10s. Qd. 



JOHN VAN VOORST, 1 PATERNOSTER ROW. 



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