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The cosmic ray abundances are compared to those of the quiescent matter referred to as galactic or solar abundances. Cosmic-ray and Galactic abundances are normalized to Iron. The comparison takes advantage of the recent data of the energy spectra of the cosmic nuclei in the interval 5× 1011-5× 1014 eV and the observation of a constant spectral index of 2.67± 0.05 . The ratio of cosmic-ray to galactic abundances conforms to a remarkable regularity : the odd nucleus has a greater ratio than the adjacent even nucleus for the 12 nuclear species in the range, 1 ≤ Z ≤ 28 being Z the atomic number. Since many decades this rule is explained by the production of secondary nuclei by spallation reactions of primary nuclei in the interstellar medium. From this regularity it is inferred that the mechanism accelerating cosmic rays (galactic accelerator) does not alter the quiescent matter abundances. From similar empirical arguments it is argued that primary proton and primary helium in cosmic rays are highly depleted at the injection stage of the galactic accelerator. The depletion of H and He cosmic nuclei relative to Iron amounts to suppression factors higher than 103-104 which outnumber those previously reported in the past and recent literature.

The dominance of secondary nuclei in the cosmic radiation and the modulation of the nuclear species at the injection of the