JAMES SWIFT & SON, 
Manufacturers of Optical and Scientific Instruments, 
Contractors to all Scientific Departments of H.M. Home 
and Colonial and many Foreign Governments, 
Grands Prix, Diplomas of Honour, and Gold 
Medals at London, Paris, Brussels, etc. 
AND OTHER 
INSTRUMENTS FOR 
ALL BRANCHES OF 
GEOLOGY, — 
MINERALOGY, 
PETROLOGY. 
Sole Makers of the 
‘DICK’? MINERALOGICAL 
’ MICROSCOPES. 
Dr. A. HUTCHINSON’S 
UNIVERSAL GONIOMETER. 
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, | Map. — Cloth. 
Price 15s. net. 
DULAU & CO., Ltd., 37 Soho Square, London, W. 
eae pasar pak 
MICROSCOPES 
