Title Algebra identified with geometry .. [electronic resource] : in a series of rough notes, forming five tracts: I. Euclid's conception of ratio and proportion ... II. "Carnot's principle" for limits ... III. The laws of tensors; or, The algebra of proportion ... IV. The laws of clinants; or, The algebra of similar triangles lying upon the same plane ... V. Stigmatic geometry; or, The correspondence of points in a plane .. / By Alexander J. Ellis. With one photolithographed table of figures.