  We show that the colour-singlet process $\Upsilon \to J/\Psi + c\bar{c}g$
significantly contributes to the inclusive process $\Upsilon \to J/\Psi + X$.
We calculate the partial width and the momentum distribution of the produced
$J/\Psi$ in this channel. The obtained width is comparable to the experimental
data. The momentum distribution is fairly soft, which is in contrast to the
results from the colour-octet processes discussed earlier in literature but is
consistent with the CLEO measurements. Further experiments to check this
contribution are suggested.
