Title, Author(s) Article Pages No. 40 The System of Lunar Craters, Quadrant II (PDF) D.W.G. Arthur, A.P. Agnieray, R.A. Horvath, C.A. Wood, C.R. Chapman 40 1 - 2 Geographic Coordinates of the Catalina station (PDF) G. Van Biesbroeck 41 3 - 6 The Period of Revolution of Uranus's Satellite Miranda (PDF) G. Van Biesbroeck 42 7 - 8 The Orbit of Comet 1947 VI (Wirtanen) (PDF) G. Van Biesbroeck 43 9 - 12 Preliminary Drawings of the Lunar Limb Areas, IV (PDF) A.K. Herring 44 13 - 14 Preliminary Drawings of Lunar Limb Areas, V (PDF) A.K. Herring 45 15 - 16 Experimental Investigations on Electrostatic Filter Lenses with Wide Images Angles (PDF) A.P. Wilska, J.A. Den Boer 46 17 - 22 Numerical Calculations on a wide Algle Filter Lens (PDF) J.A. Den Boer, A.P. Wilska 47 23 - 26 Transmittances of Some Optcal Materials for Use between 1900 and 3400 A (PDF) S.F. Pellicori 48 27 - 32 Volcanic Sublimates on Earth and Moon (PDF) G.P. Kuiper 49 33 - 60 The Systems of Lunar Craters, Quadrants III (PDF) D.W.G. Arthur, A.P. Agnieray, R.H. Pellicori, C.A. Wood, T. Weller 50 61 - 62 Micrometric Measures of Double Stars (PDF) G. Van Biesbroeck 51 65 Atmospheric Extinction Corrections in the Infrared (PDF) H.L. Johnson , R.I. Mitchell 52 67 - 71 The Absolute Calibration of the Arizona Photometry (PDF) H.L. Johnson 53 73 - 77 Interstellar Extinction in the Galaxy (PDF) H.L. Johnson 54 79 - 94 Infrared Observations of the Neugebauer-Martz-Leighton "Infrared Star" in Cygnus (PDF) H.L. Johnson , F. J. Low, D. Steinmetz 55 95 - 97 Observations of the "Infrared Stars" (PDF) S.F. Pellicori, E.H. Roland, T.M. Teska 56 97 - 104 Modular Optical Test Instrument for 1700-11000 A (PDF) E.H. Roland, S.F. Pellicori 57 97 - 104