The Journal of Applied Physics has recently published a very interesting paper by T. Schaich et al. devoted to surface wave transmission, a theme the authors consider important for DSL applications already using frequencies up to 212 MHz; in that paper some of my work on quasi-TEM multiconductor transmission-line (MTL) systems was cited —this triggered my curiosity and led to the present comments. Schaich et al. proposed an extension of MTL theory for cylindrical wires aimed to incorporate Sommerfeld wave propagation effects and, on doing that, they deemed crucial the definition of new per-unit-length inductance and capacitance transmission line parameters. In our opinion the task is not accomplishable for the concepts of inductance and capacitance, derived from flux considerations, pertain to low frequency circuit analysis or quasi-TEM regimes; the utilization of those concepts outside the place they belong to is unclear, ambiguous or impractical (and therefore useless). Surface waves are fully described by coupled electric and magnetic fields, its translation into circuital terms with voltages, capacitances and inductances, is not only unnecessary but inappropriate.