A rare-gas ionization chamber was used to obtain an accurate measurement of the absolute solar EUV flux in the 50- to 575-¿ region. The instrument, operating in total and near-total absorption, was flown on a solar-pointing sounding rocket on August 16, 1983. For the day of the flight the solar activity indices were F10.7=132.1 and RI=80, and the integrated solar irradiance at the earth, corrected for atmospheric absorption, was found to be 4.31¿0.31¿1010 photons cm-2 s-1. Almost exactly a year earlier (August 10, 1982) the same instrument measured an integrated solar flux of 5.71¿0.42¿1010 photons cm-2 s-1 during a time of enhanced solar activity (F10.7=209.5 and RI=155).