Iterated loop spaces -- The inclusion X??n?nX -- The map Fn(X) ? ?Fn?1(?X) -- The cohomology of the Fn -- The structure of iterated loop spaces in the metastable range -- An unstable adams spectral sequence -- The loop space functor for resolutions -- The metastable exact sequence -- Calculating the groups -- Calculations of the stable homotopy of K(?,n)'s -- Some calculations of the stable homotopy groups for the K(Z,n) -- An example for the metastable exact sequence -- Further calculations for some truncated projective spaces