SECRETARY'S REPORT 181 



Whipple, F. L. Earth, moon, and planets, 2d ed., 278 pp. Harvard Univer- 

 sity Press, 1963. 



. On meteoroids and penetration. Journ. Geopbys. Res., vol. 68, pp. 4929- 



4939, 1963. 



. The history of the solar system. Space Sci., XIII, vol. 5, pp. 2-6, 1964. 



. Disintegrating comets. Sky and Tel., vol, 3, pp. 148-149, 1964. 



. Brightness changes in periodic comets (abstract), Astron. Journ., vol. 



69, p. 152, 1964. 



, Evidence of a comet belt beyond Neptune. Proc. Nat. Acad, Sci., vol. 



51, pp. 711-718, 1964, 



. See also Lovell, Whipple, and Solomon, 



Whitney, C, A, Thermal response of the solar atmosphere. Astrophys. Journ., 



vol. 138, pp. 537-551, 1963. 

 Whitnet, C, a., and Skalafuris, A. J. The structure of shock fronts in atomic 



hydrogen. I. The effect of precursor radiation in the Lyman continuum. 



Astrophys. Journ., vol. 138, pp. 200-215, 1963. 

 Wood, J. A. On the origin of chondrules and chondrites. Icarus, vol. 2, pp. 337- 



401, 1963. 

 Wright, F. W. See Hodge and Wright. 

 Wright, F. W. ; Hodge, P. W. ; and Langway, C. C, Jr. Studies of particles for 



extraterrestrial origin, I, Chemical analyses of 118 particles, Journ. 



Geophys. Res., vol. 68, pp. 5575-5587, 1963. 



The Special Reports of the Astrophysical Observatory distribute 

 catalogs of satellite observations, orbital data, and preliminary results 

 of data analysis prior to journal publication. Numbers 127 through 

 156, issued during the year, contain the following material : 



No, 127, July 8, 1963 



Attitude determination from specular and diffuse reflection by cylindrical ar- 

 tificial satellites, by R. H. Giese. 

 No. 128, July 10, 1963 



Ultraviolet synthesis of adenosine triphosphate under possible primitive earth 

 conditions, by C. Ponnamperuma, C. Sagan, and R. Mariner. 

 No. 129, July 15, 1963 



Laplace coefBcients and their Newcomb derivatives, by I. G. Izsak. 

 No. 130, July 17, 1963 

 Catalogue of satellite observations: Satellites 1958 a {Explorer 1), 1959 al 

 (Vanguard 2), 1959 v (Vanguard 3), and 1959 tl (Explorer 7), for July 1- 

 Dec. 31, 1962; SateUite 1958 /32 (Vanguard 1) for Sept. 22-Oct, 18, 1962; 

 and Satellite 1960 y2 (Transit IB) for Sept, 29-Oct, 24, 1962, prepared by 

 B, Miller, 

 No, 131, July 18, 1963 



Catalogue of satellite observations: Satellites 1960 il (Eclio 1), 1960 £2 (Echo 

 1 rocket), and 1960 a (Explorer 8) for July 1-Dec, 31, 1962, prepared by 

 B. Miller. 

 No. 132, July 19, 1963 



Catalogue of satellite observations: Satellites 1961 51 (Explorer 9), 1961 ol 

 (Transit 4A), and 1961 o2 (Injun Solar Radiation 3) for July 1-Dec. 31, 

 1962; Satellite 1962 ael (Telstar 1) for July 10-Dec. 31, 1962; Satellite 1962 

 p\l (Explorer 15) for Nov. 2-Dec. 20, 1962; Satellite 1962 piil (Anna IB) 

 for Nov. 1-Dec. 31, 1962; Satellite 1962 ;Si.l (Relay 1) for Dec. 15-31, 1962; 

 and Satellite 1962 /3xl (Explorer 16) for Dee. 16-21, 1962, prepared by 

 B, Miller, 



