  We present experimental results of electrical resistivity, Hall coefficient,
magnetic susceptibility, and specific heat for single crystals of Ce-based
intervalent compound CeNiSi$_2$. The results show similar behaviors observed in
Yb-based intervalent compounds and support recent thoery of the Anderson
lattice, in which the Fermi-liquid coherence is gloval over the whole lattice.
There is a low-temperature scale $T_{coh} \sim$ 50 K for the onset of
Fermi-liquid coherence, in addition to a high-temperature scale $T_K^* \sim$
150 K for the Kondo-lattice condensation. Therefore, we conclude that two
energy scales are generic in intermediate valence compounds based on Ce where
the orbital degeneracy is smaller and where the size of the $4f$ orbital is
larger than those based on Yb.
