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The Second Part of it treates of the Geometrical Composition or Delineation of Æquations by aid of a Circle and Parabola, wherein the Author seemes to have followed Descartes About this Subject see an Excellent Tract Intitled Mesolabum, sive Duæ mediæ inter extremas datas infinitis modis exhibitæ, Auctore Renato Francisco Stusio Canonico Leodiensi (cujus nomen subticetur) Leodri Eburomum 1659 4°, which Book the Learned Author thereof promiseth to reprint and enlarge this Summer.
The Third Part of it contains 105 Theoremes about Sines, Tangents, Secants, &c, the Doctrine whereof, together with what else is omitted in this Edition, and other considerable matters about Æquations, may be hoped for from the Pen of that excellent Person, that is mentioned in the Epistle to the Reader.
III.AN ESSAY towards a REAL CHARACTER and a PHILOSOPHICAL LANGUAGE, by JOHN WILKINS D. D. Dean of Ripon, and Fellow of the R. Society.
The Reverend and Learned Author of this well-consider'd Work hath digested the things, which to him seem'd most proper and material to be said of this Subject, into four parts.
In the First, he premises some things as Præognita, concerning such Tongues and Letters as are already in being, particularly concerning those various defects and imperfections in them, which ought to be supply'd and provided against, in any such Language or Character, as is to be invented according to the Rules of Art.
The Second contains that which is the great Foundation of the thing here designed, viz. a regular Enumeration and Description of all those Things and Notions, to which Markes or Names ought to be assigned according to their respective natures; which may be stiled the Scientifical Part, comprehending Universal Philosophy: It being the proper End and Design of the several branches of Philosophy, to reduce all things and notions unto such a frame, as may express their natural order, dependence, and relati-
