DE MORGAN, Augustus. [Papers]. On the General Equation of Surfaces of the Second Degree / Sketch of a Method of Introducing Discontinuous Constants into the Arithmetical Expressions for Infinite Series, in cases where they admit of several Values / On a Q

DE MORGAN, Augustus. [Papers]. On the General Equation of Surfaces of the Second Degree / Sketch of a Method of Introducing Discontinuous Constants into the Arithmetical Expressions for Infinite Series, in cases where they admit of several Values / On a Question in the Theory of Probabilities / On the Foundation of Algebra [no. I] / On the Foundation of Algebra, No. II / On the Foundation of Algebra, no. III / On Divergent Series, and various Points of Analysis connected with them / On the Foundation of Algebra, no. IV, on Triple Algebra / On the Structure of the Syllogism, and on the Application of the Theory of Probabilities to Questions of Argument and Authority / Methods of Integrating Partial Differential Equations. Cambridge: at the University Press. 1833-1849.

Quarto. Pages 77-94, 185-193, 423-430, 173-187, 287-300, 139-142, 182-203, 241-254, 379-408, 606-613, in Transactions of the Cambridge Philosophical Society. Disbound.

De Morgan's paper 'On the Structure of the Syllogism' in which he developed a logic of noun expressions, formed the basis of Formal Logic, published the following year (1847).