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   72131
   We propose to obtain an ASCA spectrum of the water vapor megamaser and
   Seyfert 2 galaxy NGC 3735. The primary desired parameter is the
   equivalent hydrogen column to the nucleus. This column will be combined
   with our VLBA observations of the radio spectrum of the compact (sub-
   pc) nucleus. Low radio frequency turnovers in the spectra of water
   vapor megamaser galaxies are believed to result from free-free
   absorption in their edge-on disks. Combination of their photoelectric
   and free-free absorbing columns will allow the average ionization
   fraction of the disk to be derived and compared with theory. We shall
   also check the expectation that water megamaser Seyfert 2s have higher
   columns than other Seyfert 2s.
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