  The recently published precise spectrum of cosmic ray protons from the Alpha
Magnetic Spectrometer has been examined in some detail from the standpoint of a
search for deviations from a smooth, simple, power law. We find a significant
excess ($\simeq$ 10% over $\sim$ 0.3 interval in logE) centered on 50 GeV in
the published data. It is possible that the 'unfolding technique' adopted by
the experimenters causes an overestimate of the excess but it is difficult to
reduce it much below about (5 $\pm$ 3)%.
  We have examined other recent data, too. There is also evidence here, for an
excess in the same energy region, although of only (1.6 $\pm$ 0.9)%. A value of
(3 $\pm$ 1.5)% would be consistent with all the data. There are hints of
similar excesses for heavier nuclei and electrons.
  Possible explanations are put forward for an excess, should it prove to be
genuine.
