Nature, ~\ 



Xo-vnilH'r 25, 1909J 



Index 



xiiu 



Address at Seventh International Congress of Applied 

 ChemistrVi 51 



Wittmack (Herr), Tuber-bearing species of Solanum, 379 



Wolf (Prof. Max), Halley's Comet Re-discovered, 355 ; 

 Observations of Perrine's Comet, 1909b, 376; Observa- 

 tions of Halley's Comet, 19091;, 404; a Newly-discovered 

 Nebula Cluster in Cetus, 436 



Wologdine (M.), Ordinary Carbon, 59 



Woodman (L. E.), Lengths of the Waves Emitted by 

 Cyenerators of Short Electric Waves, 435 



Woods (Fri'dk. S.), a Course of Mathematics for Students 

 of Engineering and Applied Science, 241 



Woodward (Artliur Smith, LL.D., V.P.Z.S., Sec.G.S., 

 Keeper of Geology in the British Museum), Opening 

 Address in Section C at the Meeting of the British 

 Association at Winnipeg, 290 



Worcestershire, the Botany of, J. Amphlett and Carleton 

 Rea, 422 



Woronichin (N. N.), Distribution of the Alga; in the 

 Black Sea, 44 



Wright (Sir A. E., F.R.S.), Studies on Immunisation and 

 their Application to Diagnosis and Treatment of Bac- 

 terial Injections, 362 



Wright (Herbert), Hcvea brasiliensis or Para Rubber, its 

 Botany. Cultivation, Chemistry, and Diseases, 3 



Wurtz (Adolf), Abhandlung iiber die Glycole oder Zwei 

 atomige Alkohole, 64 



Wych Elm Seedlings, Rosamund F. Shove, 99 



Xydis (Mr.), Terrestrial Refraction in Egypt, 436 



Yapp (Prof. R. H.), Observations and Experiments on 



the Ecology of Spiraea Vlmaria, 537 

 Yerkes (R. W.), Imitation in Animals, 79 

 Yerkes Observatory, the, Prof. E. B. Frost, iii 

 York (H. H.), American Mistletoe Phoradendron 



flavescens, 136 

 Young (W. J.), Fermentation of Glucose, Mannose, and 



Fructose by Yeast-juice, 57 

 Young (Dr.), Effect of Excluding the Blood Passing 



through the Adrenals from the Circulation, 508 



Zachariades (N.), Reduction of Weighings to Vacuum 

 Applied to the Determination of Atomic Weights, 510 



Zeeman Effects in Helium Lines, Difference between 

 Longitudinal and Transversal, Prof. H. Nagaoka, 188 



Zeieny (Prof. John), Terminal Velocity of Fall of Small 

 Spheres in Air, 472 



Zenographical Fragments, II., the Motions and Changes 



of the Markings on Jupiter in 1888, .A. Stanley Williams, 



125 



Zierpflanzen, Unsere, P. F. F. Schulz, 451 



Zijlstra (Dr.), Investigation of the Medullary Rays in the 

 Beech, the Oak, and Aristolochia sipho, iS 



Zimmer- und Balkonpflanzen, P. Dannenberg, 451 



Zimmermann (W.), die Photographie, 274 



Zoology : Guide to the Whales, Porpoises, and Dolphins 

 (Order Cetacea) Exhibited in the Department of Zoology, 

 British Museum (Natural History), Cromwell Road, 

 London, S.VV., 4; Peripatus found in Ceram, F. Muir 

 and J. C. Kershaw, 17; Some Papers on Invertebrates, 

 22; Zoological Society, 28; the Organ of Jacobson in 

 Orycteropus, Dr. R. Broom, 28 ; Anatomy of the 

 Weddell Seal, Prof. D. Hepburn, 29 ; Death and 

 Obituary Notice of Prof. T. W. Bridge, F.R.S., 42 ; 

 Notes on Skeleton of a Sowerby's Whale, Sir WiUiam 

 Turner, K.C.B., 148; Possible Ancestors of the Horses 

 Living under Domestication, Dr. J. C. Ewart, 57; 

 Experimental-Zoologie, Part ii.. Regeneration, Dr. Hans 

 Przibrani, Dr. Francis H. A. Marshall, 6i ; an Account 

 of the Deep-sea Asteroidea collected by the R.I.M.S.S. 

 Investigator, Prof. Rene Koehler, 67 ; Additions to the 

 Giza Zoological Gardens, 78 ; Physiology of Reproduc- 

 tion in the Domestic Fowl, Raymond Pearl, 107 ; Physio- 

 logy of Nematocysts, O. C. Glaser and C. M. Sparrow, 

 107 ; " Ciliated Funnels " of the Leeches, Rudolf Loeser, 

 136 ; Forest-Hog from the Upper Congo, Dr. E. 

 Balducci, 166 ; Milk Dentition of the Aard-vark, Dr. 

 R. Broom, 166 ; Degeneration of Armour in Animals, 

 Dr. Felix Oswald, 167 ; .'\natomical Structure of the 

 Holothurians, Dr. Siegfried Becker, 167 ; Papers on 

 Reptiles and Fishes, 203 : New Species of Japanese 

 Fresh-water Sponges, Dr. N. Annandale, 225 ; die 

 Saugetiere Deutschlands, Dr. C. Hennings, 243 ; 

 Korallen und andere gesteinsbildende Tiere, Dr. Walther 

 May, 243 ; die Fortpflanzung der Tiere, Dr. R. Gold- 

 schmidt, 243 ; die Stammesgeschichte unserer Haustiere, 

 Prof. Dr. T. Keller, 243; Biology, Prof. R. J. Harvey 

 Gibson, 243 ; Sponge Spicules, Prof. E. A. Minchin, 

 265 : Leitfaden der Tierkunde fiir hohere Lehranstalten, 

 Dr. K. Smalian, 273; American Invertebrates, 299: the 

 Presence of Haemoglobin in Invertebrate Blood, Geoffrey 

 Smith, 305 : Death of Prof. Anton Dohrn, 400 ; Obituary 

 Notice of. Sir E. Ray Lankester, K.C.B., F.R.S., 429; 

 the Leporida; of North .America, E. W. Nelson, 433 ; 

 Smooth Snake still found in the New Forest, G. B. 

 Corbin, 433 ; Production of New Hydranths by the 

 Insertion of small Grafts from another Individual of 

 the same Species, Jliss E. N. Browne. 496; Service of 

 Zoology to Intellectual Progress, Prof. W. A Locy, 

 525 ; see also British Association 



Zulus, Materia Medica among the. Father .A. T. Brvant, 

 29S 



