. . JAMES SWIFT & SON, 
: Manufacturers of Optical and Scientific Instruments, 
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and Colonial and many Foreign Governments. 
Crands Prix, Diplomas of Honour, and Gold 
Medals at» London, Paris, Brussels, etc. 
MICROSCOPES 
AND OTHER 
INSTRUMENTS FOR 
ALL BRANCHES OF 
GEOLOGY, | 
MINERALOGY, © 
PETROLOGY. 
Sole Makers of the 
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Dr. A. HUTCHINSON’S 
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University Optical Works, 
81 TOTTENHAM COURT ROAD, 
LONDON. 
NOW READY. 
THE FLOWERING PLANTS 
| OF AFRICA 
AN ANALYTICAL KEY TO THE GENERA OF 
AFRICAN PHANEROGAMS. 
BY 
FR. THONNER. 
XVI and 640 Pages, 150 Plates, 1 Map. Cloth. 
Price 15s. Net. | i 
DULAU & CO., Ltd., 37 Soho Square, London, W. 
