  The Fabry-Perot scanning interferometer mounted on the 6-m telescope of the
Special Astrophysical Observatory of the Russian Academy of Sciences is used to
study the distribution and kinematics of ionized gas in the peculiar galaxy Arp
212 (NGC 7625, III Zw 102). Two kinematically distinct subsystems - the inner
disk and outer emission filaments, are found within the optical radius of the
galaxy. The first subsystem, at galactocentric distances r<3.5 kpc, rotates in
the plane of the stellar disk. The inner part of the ionized-gas disk (r<1.5-2
kpc) exactly coincides with the previously known disk consisting of molecular
gas. The second subsystem of ionized gas is located at galactocentric distances
2-6 kpc. This subsystem rotates in a plane tilted by a significant angle to the
stellar disk. The angle of orbital inclination in the outer disk increases with
galactocentric distance and reaches 50 degrees at r=6 kpc. The ionized fraction
of the gaseous disk does not show up beyond this galactocentric distance, but
we believe that the HI disk continues to warp and approaches the plane that is
polar with respect to the inner disk of the galaxy. Hence Arp 212 can be
classified as a galaxy with a polar ring (or a polar disk). The observed
kinematics of the ionized and neutral gas can be explained assuming that the
distribution of gravitational potential in the galaxy is not spherically
symmetric. Most probably, the polar ring have formed via accretion of gas from
the dwarf satellite galaxy UGC 12549.
