SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE 



Friday, December 13, 1907 

 contents 



Asaph Hall: Db. Henry S. Peitchett .... 809 



The Life and Work of Joseph Leidy : Dr. 

 Henry C. Chapman 812 



The Arc and the Spark in Radio-telegraphy: 

 W. DUDDELL 815 



Scientific Books: — 



Morgan's Experimental Zoology: Dr. C. 

 M. Child. Wells's Chemical Pathology: 

 Neixis B. Foster. Salisbury's Physiog- 

 raphy: Professor George Burdank Shat- 

 TUCK 824 



Societies and Academies: — 



Section of Geology and Mineralogy of the 

 New York Academy of Sciences: Dr. 

 Alexis A. Julien. The American Mathe- 

 matical Society: Professor F. N. Cole. 

 The Anthropological Society of Washing- 

 ton: Dr. Walter Hough. The Chemical 

 Society of Washiiigton: J. A. LeClerc .. 831 



Discussion and Correspondence: — 



The Holothurian in Drew's Invertebrate 

 Zoology: Professor Charles L. Edwards. 

 The " Census of Four Square Feet " : W. L. 

 McAtee. Professor Angelo Eeilprin as an 

 Artist: Edwin S'W'ift Balch. Badges at 

 the Meeting of the American Association: 

 Dr. Clarence L. Speyers 833 



Special Articles: — 



On the Discovery of Reptilian Remains in 

 the Pennsylvanian near Pittsburg, Pa. : 

 Percy E. Raymond. The Tusks and Size 

 of the Northern Mammoth : F. A. Lucas . . 835 



Current Notes on Land Forms: — 



A Peneplain in the Grand Canyon Dis- 

 trict: D. W. J. The Istrian Peninsula; 

 Structure, Process and Stage: W. M. D. . . 837 



The Twenty-first Session of the Marine Bio- 

 logical Laboratory: Professor Frank E. 

 LiLLiE 839 



Charles P. Matthews 842 



The Smithsonian Institution 843 



The American Federation of Teachers of the 

 Mathematical and Natural Sciences: Pro- 

 fessor C. R. Mann 843 



Convocation Week Meetings of Scientific So- 

 cieties 843 



Scientific Notes and News 845 



University and Educational Neics 848 



ASAPH HALL 



Professor Asaph Hall, one of the most 

 noted of American astronomers, died on 

 November 22 at the home of his son, Pro- 

 fessor Angelo Hall, at Annapolis, Mary- 

 land, and was buried at Goshen, Connecti- 

 cut, in the family cemetery on November 

 25. 



Asaph Hall was born in Goshen, Conn., 

 October 15, 1829. His ancestors were 

 among- the early English settlers of New 

 England and their names appear in the 

 records of the colonial wars and of the 

 revolution. His grandfather, Asaph Hall, 

 was a captain of the company organized at 

 Cornwall, Conn., which assisted in the de- 

 fense of Ticonderoga. His father, Asaph 

 Hall, married Hannah Palmer, of Goshen, 

 Conn., and Professor Asaph Hall, who has 

 just died, was the eldest of six children by 

 this marriage. 



He received such early education as the 

 youth of his time had access to at the 

 country school and at Norfolk Academy 

 and, after he had become or age, attended 

 college at McGrawville, N. T. There he 

 met Angeline Stickney, a student and 

 teacher of mathematics at that college, 

 whom he subsequently married and who, 

 throughout her life, gave herself devotedly 

 to him and to his scientific work. Professor 

 Hall's choice of astronomy was largely due 

 to her suggestion and she was the first per- 

 haps to recognize his unusual mathematical 

 ability. After their marriage, they went 

 to Ann Arbor, Mich., where Mr. Hall 

 studied under Briinnow, the well-known 



