The last amendment did not materially change the petition as considered with prior amendments respectively in Union Banking Co. v. City of Douglas, 175 Ga. 82 (165 S. E. 54), and 177 Ga. 637 (171 S. E. 131). It follows that under these decisions, which have become the law of the case, the court did not err in sustaining the general demurrer and dismissing the petition as finally amended.

Judgment affirmed.