ADVERTISEMENTS, 
3 
TMPROVED ACHROMATIC MICROSCOPES for Students, 
JL From £3 3 0 
Society of Arts Microscope 3 3 0 
Botanical Microscopes, with compouud powers, fitted in mahogany cases, from 
6s. 6d. and upwards. 
Stanliope and Codington Lenses, Thin Glass Circles and Squares, Plain Glasses, 
Kings, and Cells of every description, foruioimting microscopic objects. Improved 
Frog Plates and Live Boxes. 
At JOHN WAIINEU'S Photographic and Philosophical Instrument Manu- 
factory, 72, Fleet-street, London, E.C. 
FOSSILS DISCOVERED IN THE EXCAVATIONS FOR THE MAIN DRAINAGE, 
TO GEOLOGISTS, NATURALISTS, AND THE PUBLIC. 
n REAT NOVELTY.— NEW STEREOSCOPIC SLIDE. No, L, 
VX price Is., CYUENA DULWICHIENSIS ; a new and beautifid species of 
Estuarine Shell, discovered by Mr. Charles Hickman, Honorary Curator, Lam- 
beth Museum of Natural History, in liOwer Eocene Strata at Dulwich, 60 feet 
from surface. I'hotographed from the original, as eugraveJ in the Illustrated 
London Sews, Saturday. March 24th, 1860, and Geoloi/ist for April. 
Published by J. WARNER, Optician, 72, Fleet-street, to whom all orders are 
to be addressed. 
N.B. — Sent free by post on receipt of 14 postage stamps. 
PRACTICAL GEOLOGY.— King's College, London.— Professor 
Tennant, F.G.S., will give a Course of TWELVE LECTURES on GEO- 
LOGY, having especial reference to the application of the Science to Engineering, 
Mining, Architecture, and Agriculture. 1'he Lectures vnW commence on Friday 
Morning, April 20th, at Nine o'clock. They will be continued every Wednesday 
and Friday, at the same hour. Fee, £1 lis. 6d. 
R. W. JELF, D.D., Principal. 
GEOLOGY and MINERALOGY.— University College, London- 
Professor MoRiiis, F.G.S., commenced a Course of Lectures on PHY- 
SICAL and DESCRIPTIVE GEOLOGY, and the Application of Mineralogy to 
Geolot?yaud the Arts, on Tuesday, January 31st. To be continued every Tuesday 
and Thm'sday, at a Quarter past Four, p.m. Fee, £2 2s. 
FRANCIS W. NEW.MAN, Dean of the Faculty of Arts. 
CHAS. C. ATKINSON, Secretary to the Council. 
THE GROUJNfD BET^EATH US. 
THREE LECTURES 
ON 
THE DRIFT AND TERTIARY STRATA OF THE NEIGHBOURHOOD OF 
LONDON. 
8vo, sewed, 3s. 6d. 
John Van Vooest, 1, Paternoster-row. 
ARCHAIA: 
OE, 
STUDIES OF THE COSMOGONY AND NATURAL HISTORY 
OF THE HEBREW SCRIPTURES. 
By J. W. DAWSON, LL,D., F.G.S. 
Montreal : R. Dawson & Son. London : Sampson, Low, & Co, 47, Ludgate Hill. 
