ALL RIGHTS RESERVED. 



Vol. V. No. 31 



Ratuhal 



"^' SeiERGE: 



K JVEonthly I^evieW of Scientific Progress. 



SEPTEMBER, 1894. 



CONTENTS. 



P«GE 



Notes and Comments . . . . . . 161 



Organic Life on Mars— Lord Salisbury's Address — An Untrue 

 Tale — Lord Salisbury's North Poles of Science — Lord 

 Salisbury on Natural Selection — Dwarfing by Experiment 

 — A Moving Grove— Nematodes in the Blood of Man — 

 Nematodes and Hop-Disease in Kent — The Indian Geo* 

 logical Survey — Tertiary Rivers — Landscape Marble — The 

 Systematic Position of Trilobites — Species-Making and 

 Species-Taking. 



I. The Rev. George Henslow on Natural Selection. By Alfred 

 v^ . •, Russel Wallace, LL.D 177 



11."^ "Hert wig's "Preformation or New Formation." By P. Chalmers 



Mitchell, M. A., F.Z.S. 184 



III. The Parasites of Malarial Fevers. By J. Walter Gregory, D.Sc, 



F.G.S. (Illustrated) 195 



lY. A British Palm. By A. B. Rendle, M.A , F.L.S. 202 



Y. The Bird's Foot. 1. By F. A. Lucas 2. By Frank Finn. 3. By 



P. Chalmers Mitchell 208 



YI. Notes from the British Association, 1894 214 



Some New Books 226 



The Internal Work of the Wind. By S. P. Langley— Survey 

 of a Natural System of Plants. By E3. Pfitzer -The Inheri- 

 tance of Acquired Characters. By A. S. Packard— Agri- 

 cultural Zoology. By J. Ritzema Bos. Translated by 

 J. R, A. Davis— The " Monist " for July. 



Obituary 234 



George Huntington Williams — Dutreil de Rhins. 



Newrs of Universities, Museums, and Societies . . 235 



Correspondence: — F. A. Bather— Jno. E3. Hardman and E. P. 



Greenhalgh— John C. Willis— Gallic— C. H. B. W^oodd 239 



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