Just PuUisTied, royal 8vo, cloth, 'price £1. 1*., 

 Illustrated with Geological Map of Swaledale, and numerous G-eological Sections. 



DEPOSITION OF LEAD ORE : 



AN INQUIRY INTO THE DEPOSITION OF LEAD OEE IN THE 

 MINERAL VEINS OF SWALEDALE, YORKSHIRE. 



By LONSDALE BRADLEY, F.G.S. 



LONDON : EDWARD STANFORD, 6, CHARING CROSS, S.W. 



\TOTICE.— INTERNATIONAL EXHIBITION.— On and after 



NOVEMBER 3rd, 



THE MICROSCOPES, SPECTRUM ANALYSIS, POLARIZATION OF 

 LIGHT, ELECTRO-MAGNETIC, 

 PHOTOGRAPHIC, and LECTURERS' DEMONSTRATING APPARATUS, 

 TliG GxtcnsivG Scrios of 

 SCIENCE and ART PHOTOGRAPHS for the MAGIC LANTERN, 

 and the SCIENTIFIC NATURAL HISTORY EDUCATIONAL COLLECTIONS, 



Exhibited by SAMUEL HIGHLEY, 



For which 



Two Prize Medals and Honourable Mention were awarded, 



Will he on SALE in CLASSES 13, 14, and 29, at the Building. 

 . A Descriptive Illustrated Catalogue hy Post, for Four Stamps, on Application to 

 70, DEAN STREET, SOHO SQUARE, LONDON, W. 



Just Published, Price Is. {hy post free), 



A DESGRIPTIVE ILLUSTRATED CATALOGUE 



OF 



SAMUEL HIGHLEY^S EDUCATIONAL COLLECTIONS 



OP SPECIMENS, APPARATUS, PHOTOGRAPHIC MAGIC LANTERN 

 VIEWS, etc., to iUustrate 



MINERALOGY, GEOLOGY, ZOOLOGY, MICROSCOPY, etc. 



LONDON : SAMUEL HIGHLEY, 70, DEAN STREET, SOHO SQUARE, W. 



Just jpublisTied, price 5s. , 



PHOSPHORESCENCE; 



OE, THE 



EMISSION OF LIGHT BY MINERALS, PLANTS, AND ANIMALS. 



By DE. T. L. PHIPSON, E.C.S., etc. 



With numerous Illustrations. 



LOVELL REEVE & CO., 5, HENRIETTA STREET, COVENT GARDEN. 



