rBBKUART 26, 1915] 



SCIENCE 



327 



analysis of normal markworHs, we may expect 

 si^ificant results in a field whicli needs them 

 perhaps more than any other among the bio- 

 logical substations. 



Otto Glasee 

 University of Michigan 



SCIENTIFIC J0UBNAL8 AND ARTICLES 

 The closing (October) number of Volume 

 15 of the Transactions of the American Mathe- 

 matical Society contains the following papers : 



E. A. Johnson : " The conic as a space 

 element." 



G. A. Bliss : " The Weierstrass ^-function 

 for problems of the calculus of variations in 

 space." 



H. H. Mitchell : " The subgroups of the 

 quaternary abelian linear group." 



L. P. Eisenhart : " Transformations of con- 

 jugate systems with equal point invariants." 



F. B. Wiley : " Proof of the finiteness of the 

 modular covariants of a system of binary 

 forms and cogredient points." 



Dunham Jackson : " On the degree of con- 

 vergence of Sturm-Liouville series." 



C. E. Love : " Singular integral equations of 

 the Volterra type." 



G. 0. Evans : " On the reduction of integro- 

 differential equations." 



L. E. Dickson : " Invariants in the theory of 

 numbers." 



Also addenda and errata of volumes 11 and 

 14 and general index of volumes 11-15. 



The November number (Vol. 21, No. 2) of 

 the Bulletin of the American Mathematical 

 Society contains: Eeport of the twenty-first 

 summer meeting of the Society, by F. N. Cole; 

 " Infinite regions in geometry," by E. B. 

 Wilson; "Famous problems of geometry" 

 (review of Hobson's Squaring the Circle, A 

 History of the Problem), by E. C. Archibald; 

 Shorter notices: Smith and Gale's New Ana- 

 lytic Geometry, by E. E. Smith; Marsh's 

 Technical Trigonometry, by F. M. Morgan; 

 Fite's CoUege Algebra, by J. E. Eowe; Mitz- 

 scherling's Problem der Kreisteilung, by E. D. 

 Carmichael; Kommerell's Allgemeine Theorie 

 der Eaumkurven und Flachen, by E. C. Archi- 

 bald; Neumann's Fragen der hoheren Poten- 



tialtheorie, by T. H. Gronwall; Kaye and 

 Laby's Physical and Chemical Constants, by 

 H. B. PhiUips; "Notes"; and "New Publica- 

 tions." 



The December number of the Bulletin con- 

 tains : " On a generalization of a theorem of 

 Dini on sequences of continuous functions," 

 by T. H. Hildebrandt; "Note on removable 

 singularities," by W. E. Milne; "Concerning 

 a certain totally discontinuous function," by 

 K. P. Williams ; " Proof of the convergence of 

 Poisson's integral for non-absolutely integrable 

 functions," by W. W. Kiistermann; "The 

 Napier tercentenary celebration," by D. E. 

 Smith; "An appeal to producing mathemati- 

 cians," by George Paaswell; Shorter notices: 

 Zeuthen's Mathematik im Altertum und 

 Mittelalter, by D. E. Smith; Minkowski's 

 Geometric der Zahlen, by L. E. Dickson; 

 Elliott's Algebra of Quantics, by D. D. Leib; 

 Fabry's Problemes d'Analyse mathematique, 

 by E. W. Ponzer; Demartres' Cours de Geom- 

 etrie infinitesimale, by E. W. Ponzer; Engel- 

 hardt's Probleme im Schlusswort des Lies'chen 

 Geometric der Beriihrungstransformationen, 

 by 0. E. Glenn; Whiteford's Trisection of an 

 Angle, by E. B. Lytic; Collins' Practical 

 Algebra, by E. B. Lytle; Van Tuyl's Complete 

 Business Arithmetic, by D. E. Smith ; Martin's 

 Text-book of Mechanics, by F. L. Grifiin; Ott's 

 Angewandte Mathematik an den Deutschen 

 mittleren Fachschulen der Maschinenindustrie, 

 by E. W. Ponzer; Jacoby's Astronomy, by K. 

 P. Williams; "Notes"; and "New Publica- 

 tions." 



The January number of the Bulletin con- 

 tains: Eeport of the October meeting of the 

 Society, by F. N. Cole; Eeport of the twenty- 

 sixth meeting of the San Francisco Section, 

 by Thomas Buck; "Modular invariant proc- 

 esses," by O. E. Glenn; "Invariants, semin- 

 variants, and covariants of the ternary and 

 quaternary quadratic form modulo 2," by 

 L. E. Dickson ; " The converse of the Heine- 

 Borel theorem in a Eiesz domain," by E. W. 

 Chittenden; "Complete existential theory of 

 Sheffer's postulates for Boolean algebras," by 

 L. L. Dines ; " On the characteristics of the 

 principal manuals of elementary geometry 



