Manufacturers of Optical and Scientific Instruments, 



Contractor'; to all Scientific Deoartments of H.M. Home 

 Colonial and many Foreign Governments.. 



Crancis Prix, Diplomas of Honour, and Cold 

 Medals at London, Paris, Brussels, etc. 



MICROSCOPES 



AND OTHER 



INSTRUMENTS FOR 



ALL BRANCHES OF 



GEOLOGY, 



MINERALOGY, 

 PETROLOGY. 



Sole Makers of the 



" DICK " MINERALOCICAL 



MICROSCOPES. 



Dr. A. HUTCHINSON'S 



UNIVERSAL GONIOMETER. 



University Optica.! Works, 



81 TOTTENHAM COURT ROAD, 



LONDON, W. 1. 



UNIVERSITY OF LONDON. 



THE Senate invite applications for the University Reader- 

 ship in Geology tenable at Bedford College. Salary 

 £500 a year. The Reader will be head of the Department of 

 Geology at the College. Applications (12 copies) must be received 

 not later than first post on 10th July, 1920, by the Academic 

 Registrar, University of London, South Kensington, S.W. 7, 

 from whom farther particulars may be obtained. 



JUST ISSUED. 



chiefly Ornithology and Entomology. 

 OFFERED FOR SALE BY 



DULAU 8c CO., LTD. 



(Established 1792), 

 34-36 Margaret Street, Cavendish Square, London, W.l. 



LIBRARIES PURCHASED IN TOWN OR COUNTRY. 



