==> In this proposal, more time is being requested for LSPINOGL.S12AGN_* ==> This proposal requests an upgrade from Priority 3 for LSPINOGL.S12AGN_* ============================================================================ This proposal was approved by the OTAC, part of the observations have been and are beeing collected, we request here the time needed to collect the necessary data to derive more reliable and solid conclusions. Progress on the fundamental issues of galactic and nuclear activity and of the physical connections between the various classes of active galactic nuclei (AGN) towards a unified scheme requires the analysis of a complete, large, unbiased and representative sample and, most importantly, complete down to a certain bolometric flux limit. It is also required to obtain, for such a sample, complete multifrequency data, from X-rays to radio, to reveal the different continuum and line emission components across the e.m spectrum. Both these requirements are met with the 12um Active Galaxy Sample, which has been shown to be bolometric flux limited and for which extensive multi-frequency data have already been collected. The observations are needed to understand the connections between high IR luminosity starburst galaxies and AGN, to address the question if Seyfert 2 are dusty Seyfert 1 whose broad line regions are obscured. We will use analytical methods to reveal the dominant correlations underlying the observed properties of AGN and define a new classification system, more physically based than the emission- line scheme. Specifically, we propose to observe the 12um AGN Sample with 60-200 um PHT photometry and CAM imaging and to collect PHT-S spectrophotometry for a subsample. The FIR photometry will uniquely detect and measure the occurrence and shape of the far-IR turnover, giving the best test of nonthermal models. The mid-IR imaging will separate nuclear and galaxy luminosities and measure the distribution of hot dust. PHT-S will measure the emission-line spectrum, with high-ionization forbidden lines, H and He recombination lines, molecular transitions, and the continuum energy distribution. It is especially important to determine how the broadband near/mid-IR magnitudes are affected by dust features, both in absorption (silicates) and in emission (e.g., PAH's).