VOL. XV., No. 94. 



V> 



DECEMBER 1899. 



9.5 



NATURAL 



OAN 11 1900 



IM 



SCIENCE 



A MONTHLY REVIEW OF 



SCIENTIFIC PROGRESS 



DES MAJIMIFi;RES ET DES OlSEAUX " 



Variations, with 



Some New Books 

 Obituaries 

 Correspondence 

 News . 

 Index . 



PAGE 



381 



CONTENTS 



Notes and Comments ....... 



Eliminated — Nature Studies— The Production of Parthenogenesis in a Sea- 

 Urchin — The Record of a Great Work — Floreat AVood's Holl — Asterionella — 

 New Mice from St. Kilda — Alleged New Jlice — British JIammals — 

 Phylogeny of the Rodents — Phjdogeny of Rust — Ferments in Fungi — !More 

 Sjwrts — A Pontifical Plant — Neptuneopsis — A Note on Inheritance — ^Thc 

 Cell as a Unit of Organisation — The Biological Corner of a Natural History 

 Museum — Linne's Type Specimens of Fishes — The Molluscan "Liver" so- 

 called — Phylogenetic Senescence — Studies in Plant Morphology. 



Trees in Winter ....... 



By P. Q. Keegan, LL.D. 



Lacepj^de's "Tableaux 



By C. Davies Sherborn. 



An Extension of the Method of Treating 

 Examples and certain Conclusions . 

 By H. M. Kyle, M.A., B.Sc. 



A Zoologist on the Principles of Science . 

 By F. A. Bather, M.A. 



On the Multinuclear Cells of some Grasses 

 By Rudolf Beer. 



Fresh Facts . 



399 



406 



410 



423 



434 



440 

 442 

 461 

 462 

 4G4 

 471 



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