  Quadratic irrationals posses a periodic continued fraction expansion. Much
less is known about cubic irrationals. We do not even know if the partial
quotients are bounded, even though extensive computations suggest they might
follow Kuzmin's probability law. Results are given for sequences of partial
quotients of $\sqrt[3]{m}$ and $\sqrt[3]{m^2}$ with $m$ noncube. A big partial
quotient in one sequence finds a connection in the other.
