August 29, 1895] 



NA rURE 



417 



modem applications of electricity to traction, by P. 

 Dawson ; the chloride battery, by \V. H. Earle ; exten- 

 sion and development of the telephone in agricultural 

 districts, by Major-General Webber ; telephony, by A. R. 

 Hennett ; the field telegraph in Chitral campaign, by P. 

 v. Luke ; a new portable photometer, by W. H. Preece 

 and A. P. Trotter. Tuesday, 17. — Interim report of 

 committee on standardising ; modern flour-milling 

 machinery, by F. \V. Turner ; paper-making machinery, 

 by Mr. Mason ; printing without use of movable types, 

 by J. Southward ; incandescent gas lamps, by C. Cooke ; 

 B.A. Standard small screws, by R. B. Compton ; uniform 

 factor of safety in steam boilers, by J. Key. 



The provisional programmefor Section H isasfollows: — ■ 

 Thursday, September 12. — Address by Prof. Flinders 

 Petrie ; skulls of the aborigines of Jamaica, by Sir W. H. 

 Flower ; skulls of the Neolithic invaders of Egypt, by 

 Dr. J. G. Carson ; .Andamanese, by Morris Portman ; 

 Neolithic invaders of Egypt, by Prof. Flinders Petrie. 

 Friday, September 13. — Worked flints from South Africa, 

 by H. W. Seton Karr ; flint and metal working in Egypt, 

 by Prof Flinders Petrie ; flints found at Thebes, by Gen. 

 Pitt Rivers ; plateau flints of North Kent, by B. Harrison ; 



A SOUVENIR OF ''CHALLENGER" WORK^ 



A MEDAL has been prepared as a souvenir of the 

 scientific work connected with the Challenger ex- 

 pedition. The medal, which is in bronze, is three inches 

 in diameter, and was modelled by Mr. Birnie Khind, 

 sculptor, from designs by Mr. William S. Black, both of 

 Edinburgh. It was cast in Paris, and is being presented 

 by Dr. John Murray to the naval oflicers of the expedi- 

 tion, the contributors of memoirs to the report on the 

 scientific results of the expedition, and to members of 

 the civilian scientific stafli", as a souvenir of Challenger 

 work. 



The accompanying illustrations have been reproduced 

 from two photographs of the casts forwarded to us by 

 Mr. Black, and show the two sides of the medal. On 

 the front of the medal, the head of Athena with owl 

 occupies the centre, and is placed on the globe, which 

 in turn is surrounded by a border of water indicating 

 the voyage of the expedition around the world. Out of 

 the water rises Neptune, with trident and a trawl dis- 

 closing the treasures of the deep-sea. The decoration 

 of the border is completed with a dolphin and two mer- 



graving tools from terrace gravels of the Thames valley, 

 by H. Stopcs ; I'ala-olithic projectiles, by the same ; 

 megaliths of Tripoli, by Swainson Cooper ; kitchen mid- 

 den at Hastings (report), by W. J. Lewis Abbott. 

 Saturday, September 14. — North-west tribes of Canada 

 (report), by Prof E. B. Tylor ; Samoyedes of the Arctic 

 tundras, by A. Montefiore ; language illustrating primi- 

 tive warfare, by Rev. Hartwell Jones ; ethnographical 

 survey (report), by E. Sidney Hanland ; deviations of 

 children (report), by Dr. Warner. Monday, September 16. 

 • — Cannibalism, by Captain Hinde ; folk-lore of Ipswich, 

 by Miss Layard ; ethnographical conclusions, by G. 

 Laurence Gomme ; general conclusions, by Edward 

 Clodd ; folk-lore illustrated, by Prof lladdon ; religious 

 origin of dances, by Mrs. Grove. Tuesday, .September 17. 

 — On interference with the civilisation of other races, by 

 Lord Stanmore, Prof Douglas, Prof Haddon, and Dr. R. 

 N. Cust, and letters of the late R. L. .Stevenson ; southern 

 Arabians, by Theodore Bent ; the Eskimo, by F. Linklater 

 and J. A. Fowler. Wednesday, September 18. — Lake 

 village of (llastonburj- (report), by Dr. R. Munro ; pre- 

 historic tireek idols, by .Arthur Evans ; Neolithic station 

 of Butniir, by Dr. R. ^iunro. 



NO. 1348, VOL. 52] 



maids supportmg a ribbon with tlic words " X'oyage of 

 H.M.S. Challenger, 1S72-1S76." 



The back of the medal bears the crest of the Challenger— 

 a mailed warrior throwing down the gauntlet to Neptune, 

 whose trident appears above the waves. This central 

 figure is surrounded by a scroll bearing the words, 

 " Report on the Scientific Results of the Challenger Ex- 

 pedition, 1 886-1 895." The name of the recipient of 

 each medal is engraved around the edge. 



It is hardly necessarj' to say that the medal has been 

 very inuch appreciated, and appears to have been received 

 with special satisfaction by foreign contributors to the 

 Challenger Report, who regard it as a pleasing recognition 

 of their assistance in the great work which has now been 

 completed. 



DR. FRIEDRICH W. G. SPORER. 



IN a recent number of Nature we unfortunately had 

 to record the loss of an astronomer. Dr. Fricdrich 

 Tietjcn, who devoted himself to computation,' or, we 

 should say, to that branch of astronomy which deals witb 



