NA TURE 



[May 7, 1896 



"Practical Geometry and Enjjineering Drawing" (1875); 

 "Principles of Craphic Statics" (1879): "Perspective Ex- 

 plained and Illustrated" (1884): "Plevna: a Study of the 

 Operations of 1877 " ( 1880) ; " Official Report on the Effects of 

 the Bombardment of Alexandria" {1882); '• Fortification : 

 Past, Present, and Future" (1890) ; and of a large number of 

 papers on naval and military subjects. 



J. Norman Coi.ije, 



Ph.D., Assistant Professor of Chemistry, University College, 

 London. Distinguislied as a worker in Organic Chemistry. 

 Author of numerous papers published during the period from 

 1 88 1 to the present time in the Proifidiiv^s and Traiisai:tio>is of 

 the Royal Society of Edinburgh, Uchig's Aiiiialeu, the Berhhic 

 of the German Chemical Society, and the Traiisatliotis of the 

 Chemical Society. His earlier papers relate chiefly to the study 

 of pliosplionium and phosphine derivatives and allied ammonium 

 compounds, their behaviour when decomposed by heat having been 

 thoroughly studied by him. Of late years he has made important 

 contributions to our knowledge of dehydracetic acid, having 

 described a number of very remarkable "condensations," 

 whereby it is converted into pyridine, orcinol and naphthalene 

 derivatives. 



Arthur Matthew Weld Downing, 



M. A. , D.Sc. Vice-President of the Royal Astronomical Society. 

 President of the British Astronomical Association. Super- 

 intendent of the Nautical Almanac. Author of the following 

 papers, among many others, which have appeared in the Monthly 

 Notices of the Royal Astronomical Society : — " Proper Motions 

 of Certain Stars in the Greenwich Seven Year Catalogue for 

 1864" (vol. .wxviii., p. 514) ; " On the N.P.D.'s of the Green- 

 wich Seven Year Catalogue for i860" (vol. xl., p. 85) ; " The 

 Greenwich Standard Right Ascensions" (vol. xl., p. 162): 

 "The Possible Ten-month Period of Variation in Latitude" 

 (vol. xl., p. 430) ; " On the N.P.D.'s of the Cape Catalogue for 

 1880, and on the Greenwich and Cape Mean Systems of North 

 Polar Distances" (vol. xlii., p. 20) ; " Discussion of the Obser- 

 vations of 7 Draconis, made with the Greenwich Reflex Zenith 

 Tube, during the years 1857-75 " (vol. xlii., p. 326) ; " On the 

 relative Motion of the Components of / Eridani " (vol. xliii. , p. 

 263); "On the Orbit of 7 Coronie Australis" (vol. xliii., p. 368); 

 " On the Periodic Time of a Centauri" (vol. xlv., p. 151) ; " A 

 Comparison of the Star Places of the Argentine General Catalogue 

 for 1S75 with those of the Cape Catalogue, 1880" (vol. xlvii. , 

 p. 446) ; " Positions for 1750 and Proper Motions of 154 Stars, 

 S. of - 29° dec. , from a revision of Powalky's Reduction of the 

 Star Places of Lacaille's Astronomic F'undamenta " (vol. xlviii. , 

 p. 322) ; " Discussion of Washington Observations of the Sun, 

 1875-83" (vol. xUx., p. 431); "Corrections to the Orbit of 

 Juno" (vol. 1., p. 487) ; "The Orbit of Flora, with corrections 

 to Briinnow's Tafeln der Flora" (vol. lii., p. 585). 



Francis Elgar, 



LL. D. , F.R.S.E., Naval Architect and Engineer, Professor of 

 Naval -Architecture and Marine Engineering in the University 

 of Glasgow, and Director of Her Majesty's Dockyards. Prof. 

 Elgar has advanced the science of naval architecture by original 

 investigations, notably in the departments of stability and of the 

 structural strength of ships. These are described in papers 

 communicated to the Royal Society, one of which is printed 

 in cxtenso in Roy. Sue. Proc. No. 232, 1884. An abstract of 

 the other was read before the Society on January 14, i8S5. 

 The first describes an important and novel principle which 

 determines the variation of stability with draught of water, and 

 the second greatly advances the investigation of the straining 

 actions upon ships at sea. Prof Elgar is distinguished for his 

 acquaintance with the theory and practice of Naval Architecture, 

 and was unanimously elected on that account by the Court of 

 Glasgow University to the "John Elder" Chair of Naval 

 .Architectural and Marine Engineering. He is eminently dis- 

 tinguished as a Naval Architect and Engineer, being a Fellow 

 of the late Royal Society of Naval Architecture and Marine 

 Engineering, and Member of Council of the Institution of Naval 

 Architects, Member of Council of the Institute of Engineers 

 and Shipbuilders in Scotland, and .Member of the Institution 

 of Civil Engineers. He was appointed in January 1884 by the 

 Council of the Institution of Naval Architects to sit as their 

 representative upon the Committee formed by the President of 

 the Board of Trade tn frame rules for regulating the load lines 

 ■of ships. 



NO. 1384, VOL. 54] 



Supplementary Certificate. — Is now a representative of the 

 Institution of Naval Architects upon the Technical Committee 

 of Lloyd's Register of British and Foreign Shipping. Was 

 Vice-President of the International Jury in the class of Materiel 

 de Navigation et Sauvi-tage,m\.\\e Paris Exhibition, 1889. Is 

 the Consulting Naval Architect for the Cunard Steamers Cam- 

 pania and Liicania, which are the most powerful and, with the 

 exception of the Great Eastern, the largest ships ever built. 



Andrew Gr.w, 



M.A. (Glasgow), F.R.S.E , Professor of Physics, University 

 College of North Wales. E.\aminer in Mathematics for degrees 

 in the University of Glasgow. I'"or five years Private Assistant 

 and Secretary to Sir W. Thomson (Lord Kelvin) ; for four years 

 Official Assistant to the Professor of Natural Philosophy in the 

 University of Glasgow ; and for the last nine years in his present 

 post. Distinguished for his acquaintance with theoretical and 

 experimental physics. Author of the following scientific works 

 and papers : — " Absolute Measurements in Electricity and Mag- 

 netism " (1S89) ; "Theory and Practice of Absolute Measure- 

 ments in Electricity and Magnetism" (vol. i., 1888 ; vol. ii., in 

 two parts, 1893); "A Treatise on Magnetism and Electricity," 

 shortly to be published ; " On the Determination in .Absolute 

 Units of the Intensity of Powerful Magnetic Fields" (Phil. 

 Mag., 1883) ; "On the Dynamical Theory of Electro-magnetic 

 Action " (/Air/. , 1890); "On the Calculation of the Induction 

 Coefiicients of Coils" [ibid., 1892); "On a New Reflecting 

 Galvanometer of great sensibility, and on New Forms of Astatic 

 Galvanometers," jointly with T. Gray (Proc. Roy. Soc, 1884); 

 "On the Relation between the Electrical Qualities and the 

 Chemical Composition of Glass and .Allied Substances," Part I. , 

 jointly with T. Gray and J. J. Dobbie (Proc. Roy. Soc, 1S84) 

 " On the Electro-magnetic Theory of the Rotation of the Plane 

 of Polarised Light" (Rept. Brit. Assoc, 1891). 



George Jennings Hinde, 



Ph.D. (Munich), F.G.S. Studied at University College, 

 Toronto, Canada (1874-75) : afterwards (1879-80) studied, under 

 Dr. Karl Zittel, in the University of Munich, where he 

 graduated. Author of numerous papers on Geology and 

 Palfeontology, viz. : — " The Glacial and Interglacial Strata of 

 Scarboro' Heights and other localities near Toronto, Ontario " 

 (Canad. Journ., 1877, pp. 28, one plate) ; " On Conodonts from 

 the Cambro-Silurian and Devonian of Canada and the United 

 States" (Quart. Journ. Geol. Soc, vol. xxxv., pp. 351-369, 

 pi. xv.-xviii., 1879); "On Annelid Jaws from the Cambro- 

 Silurian and Devonian of Canada and the Lower Carboniferous 

 of Scotland (op. cit., vol. xxxv., pp. 370-389, pi. xviii.-xx., 

 1879) ; "On a New Genus of F'avosite Coral from the Upper 

 Silurian, Manitoulin Island, Lake Huron" (Geol. Mag., 1879, 

 pp. 244-246) ; " Fossil Sponge .Spicules from the Upper Chalk, 

 Horstead, Norfolk" (Inaug. Dissert., Munich, 1880, 8vo, 

 pp. 84, 5 plates) ; " On .Annelid Jaws from Wenlock and 

 Ludlow formations of the West of England " (Quart. Journ. 

 Geol. Soc, vol. xxxvi., pp. 368-378, pi. xiv., 1880); "Notes 

 on Fossil Catcispongice with Descriptions of New Species " 

 (Ann. and Mag Nat. Hist., ser. 5, vol. x., pp. 185-205, 

 pi. x.-xii., 1SS2) ; "On Annelid Remains from the Silurian 

 Strata of the Island of Gotland " (Bihang till K. Svenska Vet. 

 Akad. Handl., Bd. vii. No. 5, pp. 28, 3 plates, 8vo, Stockh., 

 1S82); "Catalogue of the Fossil Sponges in the British 

 Museum (Nat. I list. ) with Descriptions of New and little-known 

 Species" (4to. pp. 248,38 plates, 1883); "On some Fossil 

 Calcispongice from the Well-boring at Richmond, Surrey" 

 (Quart. fourn.Gcol. Soc, vol. xl., pp. 77S-783, i plate, 1884) : 

 " On the Structure and .Mhnities of the Receptaculitidu-,'^ &c. 

 (op. cit., vol. xl., pp. 795-849, pi. xxxvi.-xxxvii., 1884) ; "On 

 a New Species of Crinoid with Articulating Spines" (.Ann and 

 Mag. Nat. Hist., sex. t„m\. \\:,p\x 157-173. P>- v'-- 1885); 

 " (3n Beds of Sponge Remains in the Lower and Upper Green- 

 sands of the South of England" (Phil. Trans., 1885, vol. 

 clxxvi., p. 51, pi. xl.-xlv. ) 



Supplementary Certificate. — ".A Monograph of the British 

 Fossil Sponges" (PalceontographicalSoc, Part I., 1887, pp. 1-92, 

 pi. i.-viii. ; Part IL, 1S88, pp. 93-188, pi. ix. ; Part III., 

 1893, pp. 189-254, pi. x.-xix.); "On the Cherts and Siliceous 

 Schists of the Permo-Carboniferous of Spitzbergen " (Geol. Mag. , 

 1888, pp. 241-251, I pi.) ; " On some New species of 0'ru};uaya 

 (Carter), with Remarks on X'he Genui" (.4nn, and Mag. Naf. 

 Hist., ser. 6, vol. ii., 188S, pp. 1-12, I pi.); "On a True 



