Correction [to "Some Astronomical and Geophysical Considerations for Space Navigation"]

Summary form only given, as follows. A.M. Naqvi and R.J. Levy, authors of "Some Astronomical and Geophysical Considerations for Space Navigation," which appeared on pp. 154-170 of the September, 1963, issue of these Transactions, have called the following to the attention of the Editor: 1) On p. 159, Fig. 5, the curves from top to bottom are for m_pg=20, 15, 10 and 5, respectively. 2) On p. 167, Table XII, the entries are 100 Transmissivity (per cent).