  The scalar glueball is observed in a coupled-channel analysis of the $S$-wave
amplitude from BESIII data on radiative $J/\psi$ decays and further data. Ten
scalar isoscalar resonances were required to fit the data. Five of them were
interpreted as mainly-singlet, five as mainly-octet resonances in SU(3). The
yield of resonances showed a striking peak with properties expected from a
scalar glueball. The $D$ wave amplitude in the BESIII data on radiative
$J/\psi$ decays reveales a high-mass structure which can be described by a
single Breit-Wigner or by the sum of three $\phi\phi$ resonances interpreted as
tensor glueballs a long time ago. The structure - and further tensor resonances
observed in radiative $J/\psi$ decays - are tentatively interpreted as tensor
glueball. In $J/\psi$ decays into $\gamma\pi^0\pi^0\eta'$ several resonances
are reported. The possibility is discussed that the pseudoscalar glueball might
be hidden in these data.
