The process $\mathrm{e}^+\mathrm{e}^- \rightarrow n \gamma$ with $n\ge 2$ is 
studied
at centre-of-mass energies ranging from $\sqrt{s}=192$ to $208$ GeV. The 
data sample corresponds to a total integrated luminosity of 427 
pb$^{-1}$. The total and differential cross sections are found to be in 
agreement with the QED expectations. Using all the data collected with 
the L3 detector above the Z pole, limits on deviations from QED, 
excited electrons, contact interactions, extra space 
dimensions and excited spin-3/2 leptons are set.