PUBLICATIONS AND REPORTS MEETING PAPERS PRESENTED American Physiological Society, Tufts University, Medford, September 6-9, 1955 D. H. Raab and N. Y. auditory cortex Massachusetts S. Kiang, Variability of electrical activity of the cat's Ratio Club, London September 15, 1955 W. S. McCulloch and P. D. Wall, Inhibition in the afferent peripheral neuron and the effects of strychnine (invited) Seminar, Department of Neurophysiology, University of Copenhagen, September 20, 1955 P. Copenhagen D. Wall, Special properties of primary afferent arborizations (invited) Neurological Society, Stockholm September 24, 1955 P. D. Wall, Interaction, inhibition, and blocking in entering axons (invited) University of Glasgow, Glasgow September 26, 1955 P. D. Wall, Investigations of the effect of drugs and neuronal activity on axonal (invited) transmission University of Edinburgh, Edinburgh September 27, 1955 P. D. Wall, Comparison of physiological and anatomical methods of tracing pathways (invited) University of Puerto Rico, September 27, 1955 S. C. College of Agriculture and Mechanic Arts, Mayaguez, P. R. Brown, Microwave gaseous electronics Medical Research Council, London October 1, 1955 W. S. McCulloch, Properties of electrodes and problems of dc recording Middlesex Hospital Medical School, University of London, October 10 and 11, 1955 (invited) London P. D. Wall, Recent work at the Research Laboratory of Electronics, on behavior of nerve impulses approaching a cell (invited) M.I.T., Biophysicists Club, University of Utrecht, Utrecht October 13, 1955 W. S. McCulloch, An inhibition in the afferent peripheral neurons (invited) MEETING PAPERS PRESENTED (continued) Gr6nigen Medical School, Gronigen October 13, 1955 W. S. McCulloch, Properties of afferent peripheral neurons (invited) Salpetriere, Paris October 23, 1955 W. S. McCulloch, A site of inhibition in the afferent peripheral neurons (invited) Department of Philosophy, University of London, London October 31, 1955 W. S. McCulloch, I and it - a clinical consideration of self and self-consciousness (invited) Linguistic Circle of New York November 12, 1955 M. Halle, The contribution of acoustics to phonetics The Radio Club of America, Inc., November 30, 1955 New York W. S. McCulloch, The human mind, a giant electronic computer JOURNAL ARTICLES ACCEPTED FOR PUBLICATION (Reprints may be requested from the Document Room, 20-B-221, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 39, Massachusetts) E. B. Hensley, The conduction mechanism in oxide-coated cathodes (J. Appl. Phys.) G. W. Hughes and M. Halle, Spectral properties of fricative consonants (J. Acoust. Soc. Am.) S. J. Mason, Docile behavior of feedback amplifiers S. J. Mason, Feedback theory: (Proc. IRE) Further properties of signal flow graphs (Proc. IRE) F. N. H. Robinson and H. A. Haus, Analysis of noise in electron beams (J. Electronics, England) LETTERS TO THE EDITOR ACCEPTED FOR PUBLICATION L. C. Bradley III, Hyperfine structure by coincidence techniques (Phys. Rev.) E. F. Bolinder, Fourier transforms and tapered transmission lines H. A. Haus, Optimum gain of amplifiers (Proc. IRE) (Proc. IRE) P. L. Sagalyn, Proposed coincidence scheme for the elimination of the Doppler effect (Phys. Rev.) M. W. P. Strandberg, Phase stabilization of microwave oscillators (Proc. IRE) TECHNICAL REPORTS PUBLISHED (These and previously published technical reports may be obtained from the Document Room, 20-B-221, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 39, Massachusetts) 262 W. G. Abel, J. T. deBettencourt, J. F. Roche, and J. H. Chisholm, Investigations of ionospheric forward-scatter propagation at frequencies exceeding MUF 288 Y. C. Ho, Time domain compensation for closed-loop systems by delay-line method 293 D. A. Huffman, A study of the memory requirements of sequential switching circuits 300 J. 301 S. C. S. Barlow and R. M. Brown, An analog correlator system for brain potentials Brown, High-frequency gas-discharge breakdown SPECIAL PUBLICATIONS F. W. Rosebury, Tube Laboratory Manual, second edition. S. McCulloch, L'organisation fonctionnelle du systeme nerveux central en vue du contr8le de la position et du mouvement, du "Les grandes activit6s du lobe temporal" (Actualitis neuro-physiologiques, Salpetribre 1953), Masson et Cie, Editeurs, Paris, 1955.