We wish to investigate the dust in three protypical
 galaxies which we have shown to have optical emission line
 associated morphologically with radio jets. Because in such
 objects nonthermal jets coexist and interact with the
 thermal ISM, they provide a unique set of diagnostics for
 studying the properties of active galaxies. Such jet/ISM
 galaxies are therefore more informative probes than normal
 radio galaxies.

 Although jet/gas associations are rare at low redshifts,
 for z > 0.1 they are frequent. Hence, nearby examples of
 such phenomena are also likely to be unique laboratories
 for studying processes which occur frequently in the early
 Universe. In contrast to high-redshift radio galaxies, the
 low-redshift cases can be spatially resolved with ISOCAM.
 We therefore wish to study the best low-redshift examples.

 The main aim of this proposal are to use ISOCAM to obtain
 information about the morphologies, masses and physical
 conditions of the warm dust in these objects. The results,
 when compared with existing data, will provide important
 information about the properties of the ISM in such galaxies
 and will constrain the jet momentum and energetics.

 All our targets, except 3C 277.3 have been detected by
 IRAS. For 3C 277.3 we shall also make a short observation
 at four bands with ISOPHOT to determine the spectrum of the
 cold dust component.