A focal problem today in the dynamics of globular clusters is
core collapse. It has been predicted by theory
for decades ([#hen61##1###,#lyn68##1###,#spi85##1###]), but
observation has been less alert to the phenomenon. For many years the
central brightness peak in M15 ([#kin75##1###,#new78##1###])
seemed a unique anomaly. Then Aurière (1982) suggested a central peak
in NGC 6397, and a limited photographic survey of ours ([#djo84##1###, Paper I])
found three more cases, including NGC 6624, whose
sharp center had often been remarked on (e.g., [#can78##1###]).