SlAY 31, 1695.] 



SCIENCE. 



613 



Engineers ; Alfred Gibbs Bourne, Profes- 

 sor of Biology in the Presidency College, 

 Madras ; George Hartloj' Bryan, Fellow of 

 Peterliouse, Cambridge, and Lecturer on 

 Thermodynamics on the University list; 

 John Eliot, Meteorological Keporter to the 

 Government of India ; Joseph Eeynolds 

 Green, Professor of Botanj' in the Pharma- 

 ceutical Society of Great Britain ; Ernest 

 Howard Griffiths, physicist Private Tutor; 

 Charles Thomas Heycock, Lectm-er on Na- 

 tural Science, King's College, Cambridge ; 

 Sydney John Hickson, biologist. Fellow of 

 Downing College, Cambridge ; Henry Capel 

 LoflPt Holden, Major Royal Artillerj-, electri- 

 cian; Frank McClean, astronomer; William 

 Mae Ewan, Professor of Surgery, Universitj' 

 of Glasgow; Sidney Martin, Assistant Physi- 

 cian. Universitj- College Hospital and Hos- 

 pital for Consumption, Brompton ; George 

 M. Minchin, Professor of Mathematics in 

 the Eoyal Engineering College, Cooper's 

 Hill : "William Henrj- Power, Assistant 

 Medical Officer, H. M. Local Government 

 Board : Thomas Purdie, Professor of Chem- 

 istry in the Universitj- of St. Andrews. 



JOHX A. RYDER. 



A JoixT meeting of members of the Uni- 

 versity of Pennsylvania, the American 

 Pliilosophical Society and the Academy of 

 Natural Sciences was held in the hall of 

 the Academj' of Natural Sciences on the 

 evening of Wednesday, April 10, in mem- 

 ory of the late Professor John A. Ryder. 

 General Isaac J. Wistar presided and Philip 

 P. Calvert acted as secretary. Addresses 

 ■were made bj' Dr. Harrison Allen on ' Dr. 

 Ryder's Relation to the Academj' of Natural 

 Sciences;' Dr. Bashford Dean, of Columbia 

 College, on ' Dr. Ryder's Work in the U. S. 

 Fish Commission '; Dr. Horace Jayne, on 

 ' Dr. Ryder and the School of Biology '; 

 Prof. E. D. Cope, on 'The Evolutionary 

 Doctrine of Dr. Ryder;' Dr. H. F. Moore. 

 on ' Dr. Ryder as a Teacher,' and Dr. W. 



P. Wilson, on ' Dr. Ryder as a Collegian.' 

 The speakers all bore testimony to Professor 

 Ryder's merits as an investigator and as a 

 teacher and to his amiability and honesty 

 as a man. — American A^aturalkt. 



GENERAL. 



The Geselhchaft fiir Erdkunde at Berliu 

 has just issued the fii-st volume of a bibli- 

 ographj- of geographical science entitled 

 Biblioteca Geogi-aphica, edited Ijy Otto Bas- 

 chin with the assistance of Dr. Ernst Wag- 

 ner. The volume covers 1891 and 1892 and 

 the society proposes to continue the publi- 

 cation annually. The scope of the work is 

 in full accord with the widest undei-stand- 

 ing of the word geography. The editor, 

 Otto Baschin, Berlin, W. Schinkenplatz 6, 

 requests that authors send titles and works 

 relating to geogi-aphy to him. 



TwE Imjyrimerie Polyteclinique at Brussels 

 announces an' important Egyptological work 

 by G. Hagemans, which will include a his- 

 torj- of Egyptian civilization, a summarj- of 

 Egyptian literature and a discussion of the 

 Egj-ptian WTiting, including a comparison 

 between its hieroglyphs and those of Yuca- 

 tan ; this is to be followed by a Copto- 

 Egyptian gi-ammar, an Egyptian-French 

 and a Frencli-Egyptian dictionarj-. The 

 entire work will appear in sixty parts at 

 25 cents per part. 



We learn from La Nature that at the an- 

 nual meeting of ' Le Congrls des SociHes 

 Sarantes ' at the Sorljoune. Paris, on April 

 20th, under the jwesidency of M. Poincar^, 

 M. Moissan called attention to the rapid 

 progress and brilliant discoveries of modern 

 chemistry, and their practical outcome in 

 stimulating national industries. He passed 

 under i-eview the processes of manufacturing 

 iron, steel, aluminium, etc., the artificial 

 production of the diamond, the crystaliza- 

 tion of metallic oxides, and the u.se of elec- 

 tricity in the decomposition of those oxides 

 hitherto regarded as irreducible. At the 



