RASHEVSKY, N., Some Remarks on the Boolean Algebra of Nervous Nets in Mathematical Biophysics, _Bulletin of Mathematical Biophysics_, vol. 7, no. 4, Dec. 1945, pp. 203-211. RASHEVSKY, N., A Suggestion for Another Statistical Interpretation of the Fundamental Equations of the Mathematical Biophysics of the Central Nervous System, _Bulletin of Mathematical Biophysics_, vol. 7, no. 4, Dec. 1945, pp. 223-226. RASHEVSKY, N., The Neural Mechanism of Logical Thinking, _Bulletin of Mathematical Biophysics_, vol. 8, no. 1, Mar. 1946, pp. 29-40. LANGUAGES: WORDS AND SYMBOLS FOR THINKING Hardly any field of techniques for thinking is more fascinating than language. The following list of references, of course, is short; it is meant chiefly as an introduction pointing out a number of different paths into the field of language and languages. Such topics as the following are introduced by the references in this list: The origin of languages and alphabets. The languages of the world, and speech communities. The comparison of words and structure from language to language. The significance of grammar and syntax. The problem of clear meanings. Writing and speaking that is easy to understand. BLOOMFIELD, LEONARD, _Language_, New York: Henry Holt & Co., 1933, 564 pp. BODMER, FREDERICK, and LAUNCELOT HOGBEN, _The Loom of Language_, New York: W. W. Norton & Co., 1944, 692 pp. FLESCH, RUDOLF, _The Art of Plain Talk_, New York: Harper & Brothers, 1946, 210 pp. GRAFF, WILLEM L., _Language and Languages: An Introduction to Linguistics_, New York: D. Appleton & Co., 1932, 487 pp. HAYAKAWA, S. I., _Language in Action_, New York: Harcourt, Brace & Co., 1941, 345 pp. JESPERSEN, OTTO, _The Philosophy of Grammar_, New York: Henry Holt & Co., 1929 (third printing), 359 pp. JESPERSEN, OTTO, _Analytic Syntax_, In this book, by means of a well-contrived system of letters and signs, the great linguistic scholar Jespersen depicts all the important inter-relations of English words and parts of words in connected speech. OGDEN, C. K., _The System of Basic English_, New York: Harcourt, Brace & Co., 1934, 320 pp. SCHLAUCH, MARGARET, _The Gift of Tongues_, New York: Modern Age Books, 1942, 342 pp. WALPOLE, HUGH R., _Semantics: The Nature of Words and Their Meanings_, New York: W. W. Norton & Co., 1941, 264 pp. LANGUAGES: MACHINES FOR THINKING