74 



SCIENCE 



[N. S. Vol. XLIII. No. 1098 



plications for membership were received for action 

 at the next meeting. 



The total membership of the society is now 736, 

 including 72 life members. The total attendance 

 of members at all meetings during the past year 

 was 418 ; the number of papers read was 197. The 

 number of members attending at least one meeting 

 during the year was 253. At the annual election 

 204 votes were east. The treasurer's report shows 

 a balance of $10,470.58, including the life member- 

 ship fund of $5,560.30. Sales of the Society's 

 publications during the year amounted to $1,832.93. 

 The library now contains about 5,250 volumes. 



Sixty members and friends attended the annual 

 dinner of the society on Monday evening. 



At the annual election on Tuesday morning the 

 following oflicers and members of the council were 

 chosen : 



Vice-Presidents : E. B. Hedrick and Virgil Sny- 

 der. 



Secretary: F. N. Cole. 



Treasurer: J. H. Tanner. 



Librarian: David Eugene Smith. 



Committee of Publication: F. N. Cole, Virgil 

 Snyder, and J. W. Young. 



Members of the Council to serve until Decem- 

 ber, WIS: G. A. Bliss, R. D. Carmiehael, W. B. 

 Eite, and E. S. Woods. 



The following papers were read at this meet- 

 ing: 



J. P. Eitt : " On the derivatives of a function at 

 a point. ' ' 



J. E. Eitt : ' ' The finite groups of a class of func- 

 tions of a real variable. ' ' 



J. E. Eowe: "A new method of deriving the 

 equation of a rational plane curve from its para- 

 metric equations. ' ' 



H. B. Phillips: "Elastic nets." 



Arthur Eanum: "The singular points of an- 

 alytic space curves." 



H. M. Sheffer : ' ' The reduction of non-monadic 

 relations to monadic. ' ' 



H. M. ShefEer : ' ' The elimination of modular ex- 

 istence postulates." 



Bessie I. Miller: "A new canonical form of the 

 elliptic integral. ' ' 



A. E. Schweitzer : ' ' On the use of supernumerary 

 indefinables in the construction of axioms. ' ' 



Dunham Jackson: "Algebraic properties of self- 

 adjoint systems." 



G. D. Birkhoff : ' ' On dynamical systems with 

 two degrees of freedom. ' ' 



G. D. Birkhoff: "Infinite products of analytic 

 matrices. ' ' 



Tomlinson Port: "Linear difference and dif- 

 ferential equations. ' ' 



E. B. Wilson: "Eicci's absolute calculus and its 

 appUcatiou to the theory of surfaces." 



C. L. E. Moore: "Some theorems regarding two- 

 dimensional surfaces in euclidean m-space. ' ' 



Olive 0. Hazlett : ' ' On the fundamental inva- 

 riants of nilpotent algebras in a small number of 

 units. ' ' 



Edward Kircher: "Some properties of finite al- 

 gebras. ' ' 



M. PrSchet: "On Pierpont's definition of inte- 

 grals. ' ' 



Edward Kasner: "Infinite groups of conformal 

 representations. ' ' 



Joseph Lipka: "Isogonal, natural, and isother- 

 mal families of curves on a surface. ' ' 



L. L. Silverman : ' ' On the consistency and 

 equivalence of certain generalized definitions of a 

 limit of a function of a continuous variable. ' ' 



L. P. Eisenhart: "Euled surfaces generated by 

 the motion of an invariable curve." 



L. P. Eisenhart: "Transformations of surfaces 

 n (second paper)." 



G. M. Green: "On rectilinear congruences and 

 nets of curves on a surface. ' ' 



W. P. Osgood : ' ' The infinite region. ' ' 



John Eiesland: "On sphere-flat geometry." 



J. L. Coolidge: "The meaning of Pluoker's 

 numbers for a real curve." 



W. M. Smith: "Characterization of the trajec- 

 tories described by a particle moving under central 

 force varying inversely as the nth. power of its 

 distance from the center of force. ' ' 



H. H. Mitchell: "On the generalized Jacobi- 

 Kummer cyclotomic function. ' ' 



H. H. Mitchell : " On the congruence ex'" -f 1 = 

 dy\" 



E. D. Beetle: "Sets of properties characteristic 

 of the arithmetic and geometric means. ' ' 



E. L. Moore: "On the foundations of geom- 

 etry. ' ' 



W. C. Graustein : ' ' The correspondence of space 

 curves by the transformation of Combeseure and 

 by a transformation thereby suggested." 



E. E. Gleason: "On Diriehlet's principle." 



W. E. Milne: "On the degree of convergence of 

 Birkhoff 's series. ' ' 



G. C. Evans: "A generalization of BQcher's an- 

 alysis of harmonic functions." 



J. W. Alexander, II.: "On the factoring of 

 plane Cremona transformations. ' ' 



L. B. Eobinson : ' ' On elimination between sev- 

 eral polynomials in several variables. ' ' 



