nature, ~\ 



March 25, 191 1 J 



Index 



IX 



Arbor, 404 ; Garden Notes on New Trees and Shrubs, 

 W. J. Bean, 414; Journey into Nepal, I. K. Burkil!, 

 417 : Abnormal Fertile Spike of Ophioglossum vulgatum, 

 H. S. Holden, 429 : Structure of the Seed Coats of Hard 

 Seeds, and their Longevity, Bertha Rees, 430 ; Rosen- 

 krankheiten und Rosenfeinde, Dr. K. Laubert and Dr. 

 M. Schwartz, 4"?^ : Vergiftungen durch Pflanzen und 

 Pflanzenstoffe, ein Grundriss der vegetalen Toxikologie 

 fiir praktische Aerzte, Apotheker, und Botaniker, Dr. 

 K. Kanngiesser, Henry G. Greenish, 436 ; Sexual Di- 

 morphism in Plants, Prof. Goebel, 450 ; Desirability and 

 .Advantages of a South .\frican National Botanic Garden, 

 Prof. H. W. Pearson. 451 ; Two Botanical Excursions 

 in the South-west Region of West -Australia, Captain A. 

 Dorrien-Smith, 4:;! ; Are the Gnetales Apetalous Angio- 

 sperms? O. Lignier and A. Tison, 463-4; Action upon 

 Green Plants of some Substances Extracted from Coal- 

 tar and Employed in .Agriculture, >farcel Mirande, 464 ; 

 a Research on the Pines of .Australia, R. T. Baker and 

 H. G. Smith, 46^ ; Orchids, James O'Brien, 470 ; the 

 late Leo Grindon's Herbarium Presented to the Man- 

 chester Museum, 481 ; the Chinese Tree, Cupressus 

 hodginsii. Dr. .A. Henry, 484 ; Fertile Sport of the 

 Maidenhair Fern, Adiantum Farleyense, 484 ; Flora of 

 the Falkland Islands, C. H. Wright, 496 ; the Flower 

 Book, Constance S. .\rmfield, 507 ; Effect of Coloured 

 Light on the Development of Pure Cultures of the Green 

 .Alga, Stichococcus bacillaris. Prof. G. A. Nadson, 520 ; 

 Open-air Studies in Botany, R. L. Praeger. 540 ; Occur- 

 rence of Matonia sarmentosa in Sarawak, Cecil J. 

 Brooks, 541 ; see also British .Association 

 Bottomley (Prof.), Nitrogen Fixation, 25 ; the Cyano- 

 phyceae Endophytic in the Apogeotropic Roots of Cycads 

 and in the Cavities of .Azolla and .Anthoceros are 

 Invariablv Accompanied bv Nitrogen-fixing Bacteria, 



Bouasse (Prof H.), Cours de M^canique Rationelle et 



Experimentelle, sp^cialement ^crit pour les physiciens et 



les ing^nieurs, conforme au programme du Certificat de 



m^anique rationelle, i 

 Boudouard (O.), Testing of Metals by the Study of the 



Damping of Vibratory Movements, 361 

 Bougault (J.), Transformation of Phenyl-o)3-pentenic Acid 



into its 75-isomer, 463 

 Boulenger (G. .A.), Lacerta peloponnesiaca, Bibr., 160 

 Bourgeois (R.), Cause of an Instrumental Error in the 



Measurement of a Base Line, 497 

 Bourne (.A. .A.), Public School .Arithmetic, i/^f- 

 Bourquelot (Em.), New Sugar Verbascose, Extracted from 



the Root of Verbascum thapsus, 65 

 Bouville (De Drorein de), Salmon-disease on the Continent, 



416 

 Boveri (Prof. Th.), .Anton Dohrn : Gedachtnisreele gehalten 



auf den Internationalen Zoologen-Kongress in Graz am 



18 .August. 1910, T?4 

 Bower (C. R.), the Zones of the Lower Chalk of Lincoln- 

 shire, 387 

 Bower (Prof. F. O.). Note on Obhiot^Iossum talniatum, 



59 : Two Synthetic Genera of Filicales, 59 ; Sand-dunes 



and Golf Links, •59 

 Bowyer (.A.), the .Abuse of the Singing and Speaking Voice, 



Causes, Effects, and Treatment, 190 

 Boyd's (the late .Alexander) Collection of Birds Presented 



to the British Museum, 316 

 Braak (Dr. C), Report upon the Investigations of the 



Upper -Air, 20 

 Bragg (Prof. William H., F.R.S.), Radio-activity as a 



Kinetic Theory of a Fourth State of Matter, Discourse 



at Royal Institution, 4qi 

 Braithwaite (Miss D. M.). Method by which the Presence 



of the Drug-room Beetle (Sitodrepa Panicea) may be 



Readily Detected in Powdered Drugs, 85 

 Branca (Prof. W.), der Stand unserer Kenntnisse vom 



fossilen Menschen. 402 

 Breitenbach (Dr. Wilhelm), Populare Vortrage aus dem 



Gebiete der Entwickelungslehre. :;40 

 Breteau (Pierre), .Addition of Hydrogen in Presence of 



Palladium. 328 : Method for the Complete Destruction of 



Organic Matter in the Detection and Estimation of 



Mineral Poisons. 46^ 

 Brewer (Dr. W. H.). Death of, 83 



Bridel (M.), New Sugar, V^erbascose, Extracted from the 

 Root of Verbascum thapsus, 65 



Brissemoret (.A.), Contribution to the Study of the Physio- 

 logical Action of the Organic Bases, 262 



Britain, the .Arrival of Man in, Huxley Memorial Lecture 

 at Royal .Anthropological Institute, Prof. W. Boyd 

 Dawkins, F.R.S., 122 



British -Association : Sheffield Meeting of, Third Report of 

 the British .Association Committee, consisting of Sir 

 W. H. Preece (Chairman), Dugald Clerk and Prof. 

 Bertram Hopkinson (Joint Secretaries), Profs. Bone. 

 Burstall, Callendar, Coker, Dalby, Dixon, Dr. Glaze- 

 brook, Profs. Petavel, Smithells, and Watson, Dr. 

 Harker, Lieut. -Col. Holden, Captain Sankey, and 

 D. L. Chapman, appointed for the Investigation of 

 Gaseous Explosions, with Special Reference to Tem- 

 perature, 186 

 Sub-section of B (Agricultural Sub-section), continued. — 

 The Impurities of the Town .Atmosphere and their 

 Effect on Vegetation, Dr. Crowther and Mr. Ruston, 

 24 ; the Ether Extr.act of the Oat Kernel, Prof. Berry, 

 24 ; a Bacterial Disease of Potatoes, A. S. Home, 25 ; 

 Sugar-beet Growing, Sigmund Stein, 2^ ; G. L. Court- 

 hope, 2^ ; Nitrogen Fixation, Mr. Golding, 2/; ; Prof. 

 Bottomley, 2? ; Partial Sterilisation of Soils, Dr. 

 Russell and Dr. Hutchinson, 25; ; Dr. Shipley, 25 ; 

 Dr. Ashworth, 2^; T. J. Evans, 25;; J- J. Lister, 25; 

 an .Account of the " Points " Prized by the Breeder 

 of High-class Stock, K. J. J. MacKenzie, 2;^ ; Objects 

 and Methods of .Agricultural Soil Surveys, Mr. Hall 

 and Dr. Russell, 25 ; the " Teart " Land of Somerset, 

 C. T. Gimingham, 25; Cost of a Day's Horse Labour 

 on the Farm, Mr. Hall, 25 ; Errors of Agricultural 

 Experiments, Prof. Wood, 25 

 Section H (Anthropologv), continued — Excavations at 

 Caerwent. the .Site of Venta Silurum, T. Ashby, 22 ; 

 Some Prehistoric Monuments in the Scillv Isles. H. D. 

 .Acland, 22 ; Excavations of a Broch at Cogle, Watten, 

 Caithness, .Alexander Sutherland, 22 ; the Prehistoric 

 Horse, found at Bishop's Stortford, Rev. Dr. Irving, 

 22 ; Some Unexplored Fields in British Archaeology, 

 George Clinch, 23 ; Results of the Work carried out at 

 Meare, on Two Distinct Groups of Low Circular 

 Mounds, 23 ; Group of Prehistoric Sites Excavated 

 in South-west .Asia Minor, .A. M. Woodward 

 and H. A. Ormerod, 2^ ; Excavations in Thessaly 

 in 1910, A- J. B. Wac ard M. .S. Thomp- 

 son, 23 ; Excavations at Hagiar Kim and 

 Mnaidra, Malta, Dr. T. .Ashby, 23 ; Work carried on 

 by the British School in Egypt at Meydum and 

 Memphis, Prof. Pctrie. 23 ; a Neolithic Site in the 

 Southern Sudan, Dr. Seligmann, 23 ; the Bu-Shongo of 

 the Congo Free State. E. Torday. 23: the Suk of 

 East .Africa, Mervyn W. H. Beech, 23 ; Native Pottery 

 Methods in the .Anglo-Egyptian Sudan, G. W. 

 Grabham, 23 ; Kava Drinking in Melanesia, Dr. 

 W. H. R. Rivers, 23 : the Exogamic Character of the 

 ' Omaha Social Organisation, Miss Fletcher. 24 ; the 

 Origin of Mourning Dress. E. S. Hartland. 24 ; the 

 Peoole of Eevpt. Prof. Elliot Smith. 24 : the People 

 of Cardiganshire, Prof. H. J. Fleure and T. C. James. 

 24 : a Rare Form of Divided Parietal in the Cranium 

 of a Chimpanzee. Prof. C. J. Patten, 24 : Head Form 

 and Pigmentation of Cretan School Children. Dr. 

 Duckworth. 24 

 Section I (Phvsiologv). continued — on Respiration. Dr. 

 F. F. Blackman. F.R.S., 26; Dakin's Work on Oxida- 

 tion of Fatty -Acids and .Amino-acids by Hydrogen Per- 

 oxide and Traces of Ferrous Salts. Dr. H. M. Vernon, 

 26 ; Oxidases differ from Other Kinds of Enzymes, Dr. 



E. F. .Armstrong. 26 ; Experiments on .Anaestheti«ed 

 Leaves, D. Thoday, 26 ; Leathes' Work on the Splitting 

 of Fats at Intermediate Points in the Carbon Chain, 

 and the Formation of Peroxides by Manganese and 

 Iron with Hydroxv-acids. Prof. H. E. .Armstrong, 

 F.R.S., 26: Prevention of Compressed Air Illness, Dr. 

 Leonard Hill, F.R.S., 26; the Cause of the Treppe, 

 Prof. F. S. Lee, 27 ; .Summation of Stimuli. Prof. 



F. S. Lee and Dr. M. Morse, 27 ; Constant Current 

 as a Stimulus of Reflex .Action, and the Effect of the 

 Intensity of the Current on the Response to Stimula- 



