2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/12862I present new results on the extinction and on the YSO content of the Chamaeleon I cloud using the star count method that I have implemented and applied to DENIS and optical data. Application of this method to other nearby Large Molecular Clouds is in progress and is briefly outlined.4 pages, 3 figures, To Appear in the proceedings of the conference "Astrophysics With Infrared Surveys: A Prelude to SIRTF"Astrophysicstext