  This article is dedicated to the results of early measuring fragmentation of
relativistic $^{16}$O, $^{22}$Ne, $^{28}$Si, and $^{197}$Au nuclei in a nuclear
track emulsion. It has been found that there is a contribution of the unstable
$^8$Be nucleus decays to $\alpha$-particle multiplicities. These renewed
measurements of nuclear track emulsion exposed to $^{84}$Kr nuclei at the
energy of 950 MeV per nucleon have been analyzed and given below.
