PUBLICATIONS AND REPORTS MEETING PAPERS PRESENTED American Physiological Society Meeting, Iowa City Sept. 3-6, 1957 W. D. Keidel, U. Keidel, and N. Y-S. Kiang, Cortical and peripheral responses to vibratory stimulation of the cat's vibrissae N. Y-S. Kiang and T. T. Sandel, Off-responses from the cat's auditory cortex International Colloquium of Interference Spectroscopy, Bellevue, France Sept. 9-13, 1957 Laboratoires de Bellevue, G. W. Stroke, Photoelectric fringe signal information and range in interferometers with moving mirrors (invited) American Chemical Society National Meeting, New York Sept. 12, 1957 R. W. Fessenden and J. spectra G. R. Murray, Jr., E. S. Waugh, "Intermediate coupling" in nuclear resonance Lustig, and J. S. Waugh, Hindered rotation in ionic crystals Symposium on Pattern Recognition, University of Michigan, Oct. 21-23, 1957 Ann Arbor B. G. Farley, L. S. Frishkopf, W. A. Clark, and J. T. Gilmore, Computer techniques for the study of patterns in the electroencephalogram Fifty-fourth Meeting of the Acoustical Society of America, Ann Arbor Oct. 24-26, 1957 M. H. Goldstein, tone Jr. and T. T. Sandel, Detection of beats in repeated bursts of T. T. Sandel and N. Y-S. Kiang, Off-responses to noise bursts at the auditory cortex of the cat American Mathematical Society Meeting, Washington, Oct. 26, 1957 M. P. Schutzenberger, D.C. On a representation of commuting monoids Fifth Annual Meeting of the Armed Forces - National Research Council Committee on Hearing and Bio-Acoustics (CHABA), Washington, D.C. Oct. 29-30, 1957 W. A. Rosenblith, Problems encountered in establishment of criteria for the control of noise exposure - based on human responses (invited) MEETING PAPERS PRESENTED (continued) IRE, PGAP and PGMTT, Nov. 6, 1957 Philadelphia Section, Philadelphia M. W. P. Strandberg, Problems and possibilities with microwave quantum mechanical amplifiers (invited) Tenth Annual Conference on Electrical Techniques in Medicine and Biology, Nov. 6-8, 1957 Boston W. A. Rosenblith, Addresses in panels on "Problems in Sensory Perception and Replacement" and "Education and Research in Biophysical Engineering" (invited) The New York Academy of Sciences Conference on Nuclear Magnetic Resonance, New York Nov. 22-23, 1957 J. S. Waugh, Nuclear dipole-dipole interactions (invited) JOURNAL ARTICLES ACCEPTED FOR PUBLICATION (Reprints, if available, may be obtained from the Document Room, 26-327, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 39, Massachusetts.) E. J. Baghdady, FM demodulator time-constant requirements for interference rejection (Proc. IRE) E. F. Bolinder, A survey of the use of non-Euclidean geometry in electrical engineering (J. Franklin Inst.) A. N. Chomsky, Logical structures in language (American Documentation) C. W. Garland and L. J. Slutsky, Lattice dynamics of hexagonal close-packed metals. II. Frequency spectrum (J. Chem. Phys.) M. H. Goldstein, Jr. and N. Y-S. Kiang, Synchrony of neural activity in electrical responses evoked by transient acoustic stimuli (J. Acoust. Soc. Am.) R. B. Lees, Review of "Syntactic Structures" by N. W. Chomsky (Language) S. McCulloch, Biological computers (Trans. IRE, PGEC) S. J. Mason, About such things as unistors, flow graphs, probability, and matrices (Trans. IRE, PGCT) partial factoring, W. A. Rosenblith, Review of "Etude Radio-Anatomique de 1'Os Temporal" by M. and H. Fischgold (J. Acoust. Soc. Am.) Juster W. A. Rosenblith, Review of "For Roman Jakobson; Essays on the occasion of his sixtieth birthday" (J. Acoust. Soc. Am.) P. Sagalyn, A. C. Melissinos, and F. Bitter, Separation and identification of overlapping hyperfine structure components: Application to mercury resonance radiation (Phys. Rev.) JOURNAL ARTICLES ACCEPTED FOR PUBLICATION (continued) M. W. P. Strandberg, Review of "Microwave Principles" by H. J. P. F. Ordung, and H. L. Krauss (Scientific Monthly) Reich, J. M. W. P. Strandberg, Review of "Microwave Measurements" by E. (Scientific Monthly) G. Skalnik, L. Ginzton R. D. Thornton, Active RC networks (Trans. P. D. Wall, Excitability changes in afferent fibre terminations and their relation to slow potentials (J. Physiol.) J. S. Waugh, Nuclear dipole-dipole interactions (Ann. N. Y. IRE, PGCT) Acad. Sci.) LETTERS TO THE EDITOR ACCEPTED FOR PUBLICATION E. F. Bolinder, Note on the matrix representation of linear two-port networks (Trans. IRE, PGCT) J. del Castillo, J. Y. Lettvin, W. S. McCulloch, and W. in clamped vertebrate nerve (Nature) J. R. Leto, F. A. Cotton, and J. S. Waugh, Chemical shifts in C5H 5 and C7H7+ions: The free electron model (Nature) W. B. Nottingham, Pitts, Membrane currents Comments on '"Electrostatic potential in crystals" (Am. TECHNICAL REPORTS PUBLISHED (These and previously published technical reports, if available, may be obtained from the Document Room, 26-327, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 39, Massachusetts.) 310 R. E. Wernikoff, Outline of Lebesgue theory: 320 S. H. Unger, A study of asynchronous logical feedback networks 327 H. Shelton, a heuristic introduction Thermionic emission from a planar tantalum crystal J. Phys.)