  An analytical model, recently developed to study the electromagnetic
dissociation (EMD) energy spectra of two-neutron halo nuclei, is applied to
11-Li and 14-Be. We find that a reliable set of experimental data on EMD could
help to resolve the problem concerning the structure of the 11-Li ground state.
For 14-Be we find a mutual inconsistency between the existing experimental data
on the binding energy, radius and EMD energy spectrum. We also conclude that
the structure of 14-Be is essentially more complicated than the structure of
other Borromean two--neutron halo nuclei.
