  We used X-ray tomography to characterize the geometry of all bubbles in a
liquid foam of average liquid fraction $\phi_l\approx 17 %$ and to follow their
evolution, measuring the normalized growth rate
$\mathcal{G}=V^{-{1/3}}\frac{dV} {dt}$ for 7000 bubbles. While $\mathcal{G}$
does not depend only on the number of faces of a bubble, its average over
$f-$faced bubbles scales as $G_f\sim f-f_0$ for large $f$s at all times. We
discuss the dispersion of $\mathcal{G}$ and the influence of $V$ on
$\mathcal{G}$.
