TABLE OF CONTENTS. 



PAGK 



H. C. Salmon^ Esq. Plymouth. — On Eocks; their Chemical and Mineral 



Composition, and Physical Characteristics 221 



Dr. J. J. Watson, F.G.S. F.S.A. Etc.— The Haematite Deposits of Glamorgan- 

 shire 241 



Dr. T. L. Phipson, Paris. — Foreign Correspondence 257 



Now ready, Vol. I. of " The Geologist," handsomely bound in cloth, price 14s. 6d. 



Ornamental Covers for binding can be obtained at the OfBce of " The Geologist," 

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MAPS, PLANS, SECTIONS, and DEAWINGS on STONE 

 and WOOD, ENGRAYINGB on METAL, WOOD, and STONE, LEC- 

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 and Microscopic Analyses, are executed at the Office of " The Geologist," 

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LECTURE-DIAGRAMS. 



Now ready, No. II. of a Series of Original Geological Diagrams for Lectures ; to 

 be continued on the First of every Month. 



'l^HESE DIAGEAMS will be of LAEGE SIZE, on CANVAS, 



and will be accompanied at intervals by Sets of Smaller Diagrams Illustrative 

 of the Works of Ltell, Mantell, De la Beche, Page, and Ansted, as also by Skele- 

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Special Sets of Lecture-diagrams, illustrative of Popular Geological Subjects, 

 may be had on hire. 



No. 1.— A GEOLOGICAL MAP OF THE BRITISH ISLES, with Part of the 

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No. II.— CHARACTERISTIC FOSSILS OF THE CRETACEOUS ROCKS. 



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PEAOTICAL GEOLOGY. — KING'S COLLEGE, 

 LONDON.— PROFESSOR TENNANT, F.G.S. will give a COURSE 

 of TWELVE LECTURES on GEOLOGY, having especial reference to the 

 application of the Science to ENGMEERING, MINING, ARCHITECTURE, 

 and AGRICULTURE. The Lectures will commence on Wednesday Morniug, 

 May 4th, at 9 o'clock. They will be continued on each succeeding Friday and 

 Wednesday at the same hour. Fee 11. Us. 6d. 



R. W. Jelf, D.D. Principal. 



