We have considered Beard's contention that the trial court erred when it denied her motion to dismiss at the close of Lien's case-in-chief and thereafter allowed Lien to reopen to authenticate the survey. We conclude there was no abuse of discretion. Hyde v. Hyde, 78 S.D. 176, 99 N.W.2d 788 (1959); Voegele v. Tschirley, 76 S.D. 509, 81 N.W.2d 604 (1957); State v. Pirkey, 22 S.D. 550, 118 N.W. 1042 (1908), rev'd on other grounds, 24 S.D. 533, 124 N.W. 713 (1910); Saastad v. Okeson, 16 S.D. 377, 92 N.W. 1072 (1902). Affirmed.

[31] Further in this regard we call attention to the rule that, ordinarily, in matters of government, or public policy, or in the exercise of the police power, one legislative body cannot by its legislation bind the hands of a future legislature respecting the same subject matter. See Talbott v. Independent Sch. Dist., 230 Iowa 949, 967, 299 N.W. 556, 137 A.L.R. 234; Ferry v. Campbell, 110 Iowa 290, 300, 81 N.W.2d 604, 50 L.R.A. 92; and annotations, 42 A.L.R. 1489. We find no merit in plaintiff's claim that the Act violates Article VII, section 5, of the Constitution of Iowa.

Wigmore, supra, § 18, p. 342. See, also, Voegele v. Tschirley, 76 S.D. 509, 81 N.E.2d 604. While counsel is bound by the grounds stated in his objection if the same is overruled, the court in sustaining an objection is not bound by the grounds stated therein. Plaintiff was asked to state the amount she had paid for medications.