Produced by Marius Masi, Don Kretz and the Online Distributed Proofreading Team at http://www.pgdp.net Transcriber's notes: (1) Numbers following letters (without space) like C2 were originally printed in subscript. Letter subscripts are preceded by an underscore, like C_n. (2) Characters following a carat (^) were printed in superscript. (3) Side-notes were relocated to function as titles of their respective paragraphs. (4) Macrons and breves above letters and dots below letters were not inserted. (5) [root] stands for the root symbol; [alpha], [beta], etc. for greek letters, [oo] for infinity and [dP] for partial differential symbol. (6) The following typographical errors have been corrected: ARTICLE MAURITIUS: "... in 1893 a great part of Port Louis was destroyed by fire." 'a' added. ARTICLE MAXIMA AND MINIMA: "If d²u/dx² vanishes, then there is no maximum or minimum unless d²u/dx² vanishes ..." 'minimum' amended from 'minimun.' ARTICLE MAYOR: "Any female servant or slave in the household of a barbarian, whose business it was to overlook other female servants or slaves, would be quite naturally called a majorissa." 'household' amended from 'houselold'. ARTICLE MAZANDARAN: "They speak a marked Persian dialect, but a Turki idiom closely akin to the Turkoman is still current amongst the tribes, although they have mostly already passed from the nomad to the settled state." 'idiom' amended from 'idion'. ARTICLE MAZARIN, JULES: "But he began to wish for a wider sphere than papal negotiations, and, seeing that he had no chance of becoming a cardinal except by the aid of some great power ..." 'sphere' amended from 'shpere'. ARTICLE MAZZINI, GIUSEPPE: "he did not actually hinder more than he helped the course of events by which the realization of so much of the great dream of his life was at last brought about." 'hinder' amended from 'binder'. ARTICLE MEAUX: "The building, which is 275 ft. long and 105 ft. high, consists of a short nave, with aisles, a fine transept, a choir and a sanctuary." 'sanctuary' amended from 'sanctury'. ARTICLE MECHANICS: "The simplest case is that of a frame of three bars, when the three joints A, B, C fall into a straight [** amended from straght] line ..." 'straight' amended from 'straght'. ARTICLE MECHANICS: "... a determinate series of quantities having to one another the above-mentioned ratios, whilst the constants C ..." 'quantities' amended from 'quantites'. ARTICLE MECHANICS: "Then assuming that the acceleration of one point of a particular link of the mechanism is known together with the corresponding configuration of the mechanism ..." 'particular' amended from 'particuar'.