--Method: Pure and applied mathematics, by N. Wiener. The importance of deductively formulated theory in ethics and social and legal science, by F.S.C. Northrop. Francis Bacon's philosophy of science, by C.J. Ducasse. The history of science versus the history of learning, by G. Sarton. The method of methodology, by C.H. Kaiser. Abstraction in science and abstraction in art, by S.K. Langer. Reflections on the nature and method of philosophy, by M. Farber.

--Meaning: The meaning of mind, by C.C. Pratt. A note on neutralism, by R.B. Perry. The meanings of unity among the sciences, by H.M. Kallen. Strict and genetic identity; an illustration of the relations of logic to metaphysics, by C. Hartshorne. Field theory and judicial logic, by F.S. Cohen. The sea fight tomorrow, by D.C. Williams.

Bibliographical footnotes.

Henry M. Sheffer: a bibliography (p. xv-xvi)--Structure: A formulation of the logic of sense and denotation, by A. Church. Notes on the logic of intension, by C.I. Lewis. The logic of terms, by J.W. Miller. Two-valued truth tables for modal functions, by H.S. Leonard. N-valued Boolean algebra, by P. Henle. Triangular matrices determined by two sequences, by L.L. Silverman. The ordered pair in number theory, by W.V. Quine.