233 Moses, Harry and J. E. Carson. Stack Design Parameters Influencing Plume Rise. J. Atr Pollution Control Assoc, 18(7), 454-458 (July 1968). Moses, H., Elmer Robinson, M. E. Smith, G. C. Gill, C. R. Dickson, and E. C. Wilkins. Meteorological Instruments for Use in the Atomic Energy Industry. Meteorology and Atomic Energy. Meteorology and Atomic Energy 1968, id. David H. Slade. U.S. Atomic Energy Commission, Oak Ridge, July 1968, TID-24190, Ch. 6, pp. 257-300. Moses, Harry. Mathematical UrbanAir Pollution Models. Argonne National Laboratory Report ANL/ ES-RPY-001 (April 1969). Person, James C. and Paul P. Nicole. Isotope Effects in the Photoionization Yields and the Absorption Cross Sections for Ethylene and n-Butane. J. Chem. Dedolph, R. R., R. B. Holtzman, H. F. Lucas, and G. L. Ter Haar. The Sources of Lead in Perennial Rye- grass and Radishes. Abstracts of papers of the lo7th Natl. Mtg. American Chemical Society, April 13-18, 1969, Abstract INDE-1. Marinelli, L. D., G. F. Clemente, [. IX. Abu-Shumays, and O. J. Steingraber. Localization of Scintillations in Gamma-Ray Cameras by Time-of-Flight Techniques. Linear Resolutions Attainable in Long Flu- orescent Rods. Radiology 92, 167 (January 1969). Simmons, D. J. and Helen Cummins. Retention of Sr*® in Rats and Mice Treated with an Acetophenone Derivative of 16, 17-Dihydroxyprogesterone (Deladroxone) and Estradiol (Deladroxate). 3rd Intern. Congr. of Endocrinology, 1968. Excerpta Medica Foundation, Amsterdam, 1968, Abstract No. 224. Phys. 49, 5421-5426 (December 1968). Rose, John E. and Francis R. Shonka. Calculated Cali- ACCEPTED PAPERS Simulating Air and Muscle: Determination of W and kp,. Radiat. Res. 36, 384-395 (December1968). Simmons, D. J., Helen Cummins, and Edwin Nird- Carson, J. E. and Harry Moses. The Validity of Several Plume Rise Formulas. J. Air Pollution Control Assoc, Failla, P. M. Recovery and Modification of Radiation- linger. Observations on the Deposition of Thoro- trast in Rat Tissue. Am. J. Roentgenol., 103, 902-918 (August 1965). Simmons, D. J. and Helen Cummins. Effect of the Ace- tophenone-Derivative of 16 alpha, 17 alpha-Dibydroxyprogesterone (Deladroxone) and Estrogen (Dihydroxyprogesterone Acetophenid) on Sr Retention in Rats and Mice. Proc. Soc. Exptl. Biol. Med. 128, 1102-1106 (September 1968). Simmons, D. J. and Helen Cummins. Effect of the Ace- tophenide Derivative of 16 @,17 a-DihydroxyprogeSterone and Estradiol on the Skeletons of Rats and Mice. Am. J. Obstet. Gynecol. 103(7), 10021018 (April 1969). ABSTRACTS Failla, P. M. Recovery from Radiation-Induced Divi- sion Delay in Sea Urchin Eggs. Radiat. Res. Soc. Mtg., Houston, Texas, April 21-25, 1968. Radiat. Res. 35, 514 (August 1968). Kim, Yong-Ki and M. Inokuti. Accurate Generalized Oscillator Strengths of He. Bull. Am. Phys. Sac. 14, 610, 1969. Inokuti, M. and Y.-K. Kim. Accurate Cross Section for Ionization of Helium by Fast Charged Particles. 6th Int. Conf. on the Physics of Electronic and Atomic Collisions, Cambridge, Mass., July 28- August 2, 1969. M.I.T. Press, 1969, Cambridge, Mass., pp. 5-9; pp. 10-12. Induced Division Delay in Developing Sea Urchin Eggs. Radtology. Kim, Yong-Ki and M. Inokuti. Generalized Oscillator Strengths of the Helium Atom. ITI. Transitions from the Ground State to the 3'D and 4#P States. Phys. Rev. Inokuti, M. and Y.-K. Kim. Total Cross Sections for Inelastic Scattering of Charged Particles by Atoms and Molecules. III. Accurate Bethe Cross Section for Ionization of Helium. Phys. Rev. Ter Haar, G. L., R. R. Dedolph, R. B. Holtzman and H. F. Lueas, Jr. The Lead Uptake by Perennial Ryegrass and Radishes from Air, Water and Soil. Environmental Res. Lueas, H. F., Jr., J. H. Marshall, and L. A. Barrer. The Level of Radium in Human Blood Forty Years after Ingestion. Radiat. Res. Marshall, J. H., J. Rundo, and G. E. Harrison. Retention of Radium in Man. Radiat. Res. Rowland, R. E. and J. Farnham. The Deposition of Uranium in Bone. Health Phys. Simmons, D. J. and Arthur 8. Kunin. The Development and Healing of Rickets in Rats. I. Nutritional Considerations and Studies with Tritiated Thymidine. Clin. Orthopaed. Simmons, D. J. and Arthur 8. Kunin. The Development and Healing of Rickets in Rats. II. Studies with Tritiated Proline. Clin. Orthopaed. AAS brations for lon Chambers Fabricated from Plastics