CONVERGENCE IN EVOLUTION 



By ARTHUR WILLEY, D.Sc, Lond.; Hon. M.A., Cantab.; F.R.S., 



Sometime Balfour Student of the University of Cambridge ; Late Director of the Colombo 



Museum, Ceylon ; Strathcona Professor of Zoolo|ry in the M'G'U University, Montreal, 



Canada; Author of "Amphioxus and the Ancestry of Vertebrates.' 



With Diap-ams. Demy %vo. Is. 6d. net. {Just Out. 



This brings together some scattered facts of parallel development of outward form and 

 internal structure in the Animal kingdom, introducing new cases and fresh interpretations. 

 It is, taken as a whole, an original contribution to the theory of organic evolution, with 

 special reference to the forms of Animal life. 



With 180 Illustrations from Photographs In the Author's private 

 collection, and from models In the Si. Louis Hospital Museum 



Price I5s. net. Demy 8vo 



DISEASES OF THE SKIN 



By ERNEST GAUCHER 



PROFESSOR OF CUTANEOUS AND SYPHILITIC DISEASES AT THE FACULTY OF MEDICINE 

 AND niVSICIAN TO THE ST. LOUIS HOSPITAL, PARIS 



INCLUDING 



RADIUMTHERAPY 



By Drs. WICKHAM. DEGRAIS. and DOMENICI 



TRANSLATED AND EDITED BY 



C. F. MARSHALL, M.Sc, M.D.. F.R.C.S. 



SURGEON TO THE BRITISH SKIN HOSPITAL ; LATE ASSISTANT SURGEON TO THE HOSPIiAL 

 FOR DISEASES OF THE SKIN, BLACKFRIARS 



This is a concise and practical manual of Cutaneous diseases, presenting 

 the teaching of the Paris School of Dermatology and the most modem forms of 

 treatment, including recent improvements in the technique of treatment by 

 Radium, and the results obtained thereby. 



JOHN MURRAY, ALBEMARLE STREET, W. 



Scald of Charges for Advertising in *' Science Progress." 



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All applications for space to be made to 



iVIr. JOHN MURRAY, 50a, Albemarle Street, W. 



or to 



Mr. H. A. COLLINS, 32, BIrdhurst Road, Croydon. 



( XV ) 



