  The effect of the collision term of the Boltzmann equation is discussed for
the diagonal conductivity in the absence of magnetic field and the off-diagonal
conductivity within the linear order of magnetic field. The consistency between
the Boltzmann equation and the Fermi-liquid theory is confirmed. The
electron-electron interaction is totally taken into account via the self-energy
of the electron. The Umklappness is taken into account as the geometrical
factor. The current-vertex correction in the fluctuation-exchange (FLEX)
approximation violates these conventional schemes. In the Appendix the Tsuji
formula, the geometrical formula for the Hall conductivity is discussed.
