STATISTICS ; TRIGONOMETRY.
BIBLIOGRAPHY.—George Chrystal, Algebra (Black, 1889; valuable for Bibliography.—George Chrystal, Algebra (Black, 1889; valuable for teachers and advanced students, especially with reference to founda tion principles). H. B. Fine, College Algebra, Boston (Ginn), 1901, 1905. (Briefer than Chrystal, but valuable in the same way.) W. F. Meyer, Encyklopiidie der mathematischen Wissenschaften, Band I., Leipzig (Teubner) , 1898-1904. (For advanced students. Articles by H. Schubert, "Grundlagen der Arithmetik" ; by E. Netto, "Rationale Funktionen" ; and by G. Landsberg, "Algebraische Gebilde." There is a French edition.) D. E. Smith, History of Mathematics, Boston (Ginn), 1925, 1927. (Vol. ii. contains a chapter, 1S4 pp., on the his tory of elementary algebra; many facsimiles.) George Salmon, Mod ern Higher Algebra, 4th ed., 1885. O. Pund, Algebra, mit Einschluss der elementaren Zahlentheorie, Leipzig (Goschen), 1899. (Particularly good summary.) H. Weber, Lehrbuch der Algebra, Braunschweig, 2d ed., 1898, 1899. (For advanced students.) H. Weber and J. Wellstein, Encyklopddie der Elementar-Mathematik, 3d ed., Leipzig (Teubner), 19o9-15. (Vol. i. contains the algebra.) Vera Sanford, History of Standard Problems (Teachers College Publications), 1927. M. Bocher, Higher Algebra (Macmillan) (19o7 ; reprinted, 1924. General intro duction for advanced students) . (D. E. S.)