2 Where a check has been certified by a bank, and afterwards fraudulently altered, the bank is not estopped to deny the genuineness of the check by a subsequent statement of its teller that the certification is good. Clews v. Bank of New York, 89 N. Y. 418.

It has been asserted as a general rule, that the law of estoppels has no application to infants. (d) 1 divisional line between them, and by parol agree on such a line; B sells to C; before the sale A informs C, orally, that he claimed only to that agreed, line; and after the sale C made expensive improvements on the land, up to the line, with the knowledge of A, who expressed no dissent and made no objection. After all this, A discovered that this was not the true line, and that B had been in possession of land really belonging to A, and that C, as grantee of B, now held this land. A brings his action for this land, and was permitted to recover it, not being estopped by what he had said or done, as it arose from a mere mistake, without fraud or negligence. See, contra, Manufacturers' Bank v. Hazard, 30 N. Y. 226; Brookman v. Metcalf, 4 Bob. 568; and Maple v. Kussart, 53 Penn. St. 348; and in favor of this view, Gore v. White, 20 Wis. 425. (d) Lackman v. Wood, 25 Cal. 147.

1 But the neglect of a ward for more than seven years after his majority to disaffirm an investment of his property by his guardian, made during minority, where he has had ample opportunity to learn his rights, will estop him from claiming his interest as against the creditors of the company in which the investment was made. Hoyt v. Sprague, 103 U. S. 613. In Sims v. Everhardt, 102 U. S. 300, a married woman was held not to be estopped from denying, within two months of becoming a feme sole, but more than twenty years after her majority, a statement made during infancy but after her marriage, that she was at the time of full age.