Taking this ease in the most favorable aspect for plaintiff, — that is, as an effort by the defendant to recover back money paid, — it is like that of City of Chaska v. Hedman, ante, p. 525, (55 N. W. Rep. 737,) in which we held that it was not a case for the doctrine applicable to voluntary payments. The decision upon that point renders unnecessary the consideration of the other assignments of error.

Order affirmed.

(Opinion published 55 N. W. Kep. 738.)