  We report a Virtual Compton Scattering study of the proton at low CM
energies. We have determined the structure functions $P_{LL}-P_{TT}/\epsilon$
and $P_{LT}$, and the electric and magnetic Generalized Polarizabilities (GPs)
$\alpha_E(Q2)$ and $\beta_M(Q2)$ at momentum transfer Q2= 0.92 and 1.76 GeV2.
The electric GP shows a strong fall-off with Q2, and its global behavior does
not follow a simple dipole form. The magnetic GP shows a rise and then a
fall-off; this can be interpreted as the dominance of a long-distance
diamagnetic pion cloud at low Q2, compensated at higher Q2 by a paramagnetic
contribution from $\pi N$ intermediate states.
