January 22, 1915] 



SCIENCE 



145 



Caroline E. Seely: "Certain non-linear integral 

 equations. ' ' 



E. B. Van Vleck, presidential address: "The 

 rfile of the point-set theory in geometry and dy- 

 namics. ' ' 



W. F. Osgood: "On the division of space of n 

 dimensions by a simple closed surface. ' ' 



G. D. Birkhoff : ' ' The functions of several vari- 

 ables defined by linear difference and differential 

 equations. ' ' 



G. D. Birkhoff: "Note on the reducibility of 

 maps. ' ' 



Virgil Snyder and F. E. Sharpe: "Certain 

 quartic surfaces belonging to infinite discontinu- 

 ous Cremona groups." 



H. S. Vandiver: "A property of cyclotomic 

 integers and its relation to Permat's last 

 theorem. ' ' 



J. L. Coolidge: "Circular transformations and 

 complex space. ' ' 



G. A. Miller: "Note on several theorems due to 

 A. Capelli." 



Edward Kasner: "The generalized concept of 

 differential element." 



P. N. Cole: "Note on solvable quintics. " 



G. C. Evans: "Note on the variation of a func- 

 tion depending on all the values of another func- 

 tion. ' ' 



E. V. Huntington: "A set of postulates for 

 elementary dynamics" (preliminary communica- 

 tion). 



E. E. Moulton: "The solution of an infinite 

 system of implicit functions. ' ' 



C. N. Haskins : " On the roots of the incomplete 

 gamma function." 



W. C. Graustein : ' ' On the geodesies and geo- 

 desic circles on a developable surface. ' ' 



D. F. Barrow: "Oriented circles in space." 

 James Maclay: "A transformation of polynom- 

 ials relatively to the exponents. ' ' 



J. W. Alexander II: "A method for resolving 

 the singularities of algebraic manifolds." 



T. H. Gronwall: "On the summation method of 

 de la VallSe-Poussin. " 



T. H. Gronwall: "An integral equation of the 

 Volterra type. ' ' 



T. H. Gronwall : " On the distortion in conf ormal 

 representation. ' ' 



The winter meeting of the society at Chicago 

 was held on December 28-29. The next regular 

 meeting of the society will be at Columbia Univer- 

 sity on February 27. 



F. N. Cole, 

 Secretary 



SOCIETIES AND ACADEMIES 



THE BIOLOGICAL SOCIETY OF "WASHINGTON 



The 528th meeting was held in the Assembly 

 hall of the Cosmos Club, October 17, 1914, with 

 President Paul Bartsch in the chair. 



Eesolutions on the death of Theodore N. Gill, a 

 founder and farmer president of the society, were 

 presented. 



Under the head of Brief Notes, etc., L. O. 

 Howard presented evidence to show that, contrary 

 to report, no birds had been killed in connection 

 with arsenical spraying for the destruction of the 

 gypsy moth in New England. Paul Bartsch re- 

 ported that English sparrows destroyed many 

 army worms on Washington lawns during the re- 

 cent invasion by those insects. 



The regular program followed. 

 A Mouse that Lives in Treetops: Vernon Bailey. 



An account of the history and habits of Fhena- 

 comys longicauda as observed by the speaker near 

 Eugene, Oregon. 

 Botanical Collecting in the Northwest: A. S. 



Hitchcock. 



A general account of a trip to the northwestern 

 part of the United States and British Columbia 

 during the past summer in search of grasses. 

 The Present State ,of Fox-farming : Ned Deae- 



BOEN. 



Observations made in Prince Edward Island and 

 elsewhere during the past spring. 



The 529th meeting was held October 31, Presi- 

 dent Bartsch presiding. 



The program consisted of two communications. 

 Pelage Variations of American Moles: Hartley 



H. T. Jackson. 



Twenty Years' Experience with Great Apes of 



Western Africa: E. L. Gabnee. 



Mr. Garner's lecture was profusely illustrated 

 with lantern slides and gave much new informa- 

 tion relative to African chimpanzees and gorillas. 



The 530th meeting was called to order by 

 President Bartsch, November 14, 1914. 



Brief notes were presented by Marcus M. Lyon, 

 Jr., L. 0. Howard, A. D. Hopkins and W. H. Os- 

 good. 



Three communications were presented. 

 Certain Miocene Fossils: Wm. Palmee. 



The fossils exhibited were obtained by the 

 speaker at the cliff deposits near Chesapeake 

 Beach, Md. Owing to the scanty material on 

 which Cope's types in the Philadelphia Academy 



