The effect of liquid height on power consumption in a non-baffled agitated vessel was clarified experientally. On the other hand, the power correlation proposed in our previous paper was modified by changing the similarity parameter gamma n(p)(0.7)(b/D) to the modified one gamma n(p)(0.7)(b/H) which contained the liquid height H. The resultant power correlation was well correlated not only with the present experimental result but also with the expreimental result by Nagata.