SECRETARY'S REPORT 83 



Hodge, P. W. Sampling dust from the stratosphere. Smithsonian Contr. As- 



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 JACCHIA, L. G. Irregularities in atmospheric densities deduced from satellite 



observations. Ann. Geophys., vol. 17, pp. 52-55, 1961. 

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 . Satellite drag during the events of November 1960. In H. C. van de 



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North Holland Publishing Co., Amsterdam, 1961. 

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 Kozai, Y. Tesseral harmonics of the gravitational potential of the earth as 



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Photogrammetry, and Cartography, Publ. No. 15, 1961. 

 Kumar, S. S. A method for computing monochromatic fluxes in model stellar 



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. On the age of the galaxy. Observatory, vol. 82, pp. 34-36, 1962. 



. On the A and * operators of radiative transfer theory. Smithsonian 



Contr. Astrophys., vol. 5, No. 11, pp. 153-185, 1962. 

 Lassovszky, K. On the accuracy of the measurements made upon films photo- 

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 Ledoux, P., and Whitney, C. A. Velocity fields and associated thermodynamic 



variations in the external layers of intrinsic variable stars. In R. N. 



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 MiTXER, H. E. Electromagnetic potentials in quantum mechanics. Phys. Rev., 



vol. 124, pp. 940-944, 1961. 

 Skalafuris, a., and Whitney, C. A. Radiative cooling behind shock fronts 



in stellar atmospheres. Ann. d'Astrophys., vol. 24, pp. 420-424, 1961. 

 Southworth, R. B. Planetary perturbations and the Perseid meteor stream 



(abstract). Astron. Journ.. vol. 66, pp. 295-296, 1961. 

 Strom, S. E., and STRoai, K. M. A possible mechanism for Jovian decameter 



bursts (abstract). Astron. Journ., vol. 67, p. 121, 1962. 

 TiLLES, D. Variations of silicon isotope ratios in a zoned pegmatite. Journ. 



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 . Primordial gas in the Washington County meteorite. Journ. Geophys. 



Res., vol. 67, pp. 1687-1689, 1962. 



