SECRETARY'S REPORT 75 



inferring the density of the earth's atmosphere from a satellite at such 

 low altitude. In the course of this work he extended a U. S. Air 

 Force atmospheric model to much greater heights than the 540 kilo- 

 meters at which the Air Force abandoned it. 



PUBLICATIONS 



Volume 1 and numbers 1-4 of volume 2 of the Smithsonian Contri- 

 butions to Astrophysics were published. Volume 1, issued under the 

 partial support of the National Science Foundation, included New 

 Horizons in Astronomy, a series of 39 papers by eminent American 

 astronomers outlining future research of importance in astronomy. 

 Research contributions on meteors and solar work comprised the 

 remainder of the publications. 



During the current year the following publications by staff mem- 

 bers of the Astrophysical Observatory appeared in various scientific 

 journals: 



Fireman, E. L., and Schwabzer, D. Measurement of Li e , He' and H* in meteor- 

 ites and its relation to cosmic radiation. Geochim. and Cosmochim. Acta, 

 vol. 11, No. 4, April 1957. 



Henize, Karl G. The Baker-Nunn satellite-tracking camera. Sky and Tele- 

 scope, vol. 16, pp. 108-111, January 1957. 



Jacchia, L. G. A preliminary analysis of atmospheric densities from meteor 

 decelerations for solar, lunar and yearly oscillations. Journ. Meteorol., 

 vol. 14, pp. 34-37, 1957. 



Keook, Max. Electrodynamics of fluids and plasmas. Smithsonian Contr. 

 Astrophys., vol. 1, pp. 53-58, 1956. 



Meltzer, Alan S. Spectroscopic investigation of Algol. Astrophys. Journ., 

 vol. 125, p. 359, 1957. 



Meltzer, Alan S., Schabzs child, M. and B., and Seable, L. A spectroscopic 

 comparison between high- and low-velocity K giants. Astrophys. Journ., 

 vol. 125, p. 123, 1957. 



Rinehart, John S. Applications of high speed photographic techniques to 

 hypervelocity free-flight investigations. Proc. 3d Int. Symp. High Speed 

 Photogr. Butterworth Scientific Publications, 1956. 



. Meteorites. Smithsonian Contr. Astrophys., vol. 1, p. 81, 1956. 



. Ablation of meteorites [abstract]. Bull. Amer. Phys. Soc, vol. 2, p. 45, 



1957. 



. A soil survey around the Barringer Crater. Sky and Telescope, vol. 16, 



No. 8, June 1957. 



. Arizona's meteorite crater, by H. H. Nininger [review]. Science, 



vol. 125, p. 829, 1957. 

 Whipple, Fred L. Meteors. Smithsonian Contr. Astrophys., vol. 1, pp. 83-86, 



1956. 

 . The scientific value of artificial satellites. Journ. Franklin Inst., 



vol. 262, pp. 95-109, 1956. 



. Moontracking. Saturday Rev., vol. 39, No. 35, pp. 37-39, Sept. 1. 1956. 



. Wanted: Spotters for the satellites. Science Digest, December 1956, 



pp. 33-37. 



. Moon. World Book Encyclopaedia, pp. 5227-5231, 1957. 



. The sunward tail of comet Arend-Roland [letter]. Nature, vol. 179, 



p. 1240, 1957. 



