CLASMEICATIOX. No entirely satisfactory classification of mathematics is possible. The various brandies are so interrelated that exact lines of separation cannot be drawn. a fact of apparent and great advantage to the science. The most recent attempt at classification is that made in the Enojklopiidir der mathematisehen Wissensehaften. The following scheme covers the principal subjects discussed: BIBLIOGRAPHY. Select special bibliographies Bibliography. Select special bibliographies may be found in most of the article.: on mathe matical topics. Following are some of the best known general works on the history of mathe matics: Cantor, l'oriesungen fiber Gesehichte der Muthematik (Leipzig. 1880-92) : Fink, His tory of Mathematics (Chicago, 1900), form ing a brief compendium of Cantor's work; Ball, .1 Short .,:lceount of the history of Mathe matics (London. 1901) ; Smith, "Ilistory of Nodern fatbematies," in :Merriman and Wood ward's Higher Mathematics (New York. 1896); Suter, Gesehichte der mat hematisehen senseha f t en (Zurich, 1873-75) ; Hankel, Zur Geschichte der Mathematik, int Altertam and Mittclalter (Leipzig, 1874) Zeuthen, Die Lehre ran den. Ktgelschnitten fin A ltertam (Co
penhagen. 1886) ; Zeuthen, Vorlesungen Ober die Geschichte tier 3lathematik (Copenhagen, Ger. trans. in 1895) ; (Anther, Gcschichte des mathe. matisehen Unterriehts im deatschea .11 ittciaper bis rum Jahre 1.525 (Berlin. 18S7) ; Cajori, A History of. Mathematics (New York, 1894); Cajori, .1 History of Elementary Mathematics (New York. 1896); Abhandlanyea zur Gc schichte der Mathematik (Leipzig. 1S77 et seq.). The Bibliotheea Mathrmatica (Leipzig). edited by Enestram, is devoted to the history of the subject. For the general bibliography of the science, consult the elaborate EncyklopOdie der mathematischca Wissensehaften, the publication of which was begun at Leipzig in 1898. Com plete records of the recent publications touch ing mathematical subjects may he found in the Jahrbuch fiber die Fortschrittc der Mathematik (Berlin, since 1871).