It has long been settled that “ a grant of that which a grantor has potentially, though not actually, is good.” Grantham v. Hawley, Hob. (132) 286; Fonville v. Casey, 1 Murph. 389; S. C. 4 Am. Dec. 559; McCarty v. Blevins, 5 Yerg. 195; S. C. 26 Am. Dec. 262. In this state a chattel mortgage given upon a crop of grain at or about the time it is sown, and before it is up, or has any appearance of a growing crop, is wholly inoperative upon such crop when grown. Comstock v. Scales, 7 Wis. 159; Lamson v. Moffat, 61 Wis. 153. But where such chattel mortgage *39has been given after the seed sown has sprouted and made its appearance above the ground as a growing crop, there can be no doubt but what it is operative and covers the grain when it comes into existence as the product or as an accession to what was growing when the mortgage was. given and covered by it. Bryant v. Pennell, 61 Me. 108; Condermam, v. Smith, 41 Barb. 404.
On the same principle, where the owner of a domestic animal gives a mortgage thereon during the period of gestation, the mortgagee will, as against the mortgagor, be entitled to the offspring when born. McCarty v. Blevins, supra; Conderman v. Smith, supra; Hughes v. Graves, 1 Litt. (Ky.), 317; Evans v. Merriken, 8 Grill & J. 39; Forman v. Proctor, 9 B. Mon. 124; Fowler v. Merrill, 11 How. 375, 396; Kellogg v. lovely, 46 Mich. 131.
But it is urged that notwithstanding the mortgage may cover the calves, as between the parties, yet that as they are not described nor in any way referred to in the defendant’s mortgage, the filing of it was not constructive notice to the plaintiff, and hence that his mortgage gives him the superior right. Had the defendant, upon obtaining his mortgage, taken possession of the cows, and retained them, and the calves, when dropped, until after the plaintiff obtained his mortgage, then he undoubtedly could have held them as against the plaintiff. By reason of such possession the plaintiff and the world would have been conclusively presumed to know the defendant’s interest in and right to the calves. Our statute authorizes the filing of the mortgage in lieu of such possession, and as equivalent to it. Sec. 2313, E. S. Such filing is constructive notice to third parties, subsequently dealing with the property, as to the rights and interest of the mortgagee in the property mortgaged. Such constructive notice is, of course, co-extensive with the contents of the mortgage so filed. But, from the very nature of things, it cannot be constructive notice of *40facts existing dehors the mortgage and in no manner referred to in it, unless the contents of the mortgage, together with the facts and circumstances connected with the mortgaged property or its possession, are such as to give actual or constructive notice of the rights of the mortgagee to those subsequently dealing with the property; or, at least, sufficient to put them upon inquiry. While the calves were following the cows for nurture, it may be that a person acquiring an interest in them by purchase or mortgage would be presumed to know that the mortgage was given during the period of pregnancy.
In Forman v. Proctor, 9 B. Mon. 124, it was held “ that the first mortgage . . . must be regarded as covering and including, for a reasonable tvme,\he produce or descendants of the female animals conveyed by the mortgage, these being incident to the legal title and the right of immediate possession vested in the mortgagee, for whom the mortgagor holds the possession.” The “reasonable time” mentioned manifestly meant the period during which the young followed their mothers for nurture. In Winter v. Landphere, 42 Iowa, 471, the mortgagor sold the calves when they were eighteen months old, and the court said “the time had passed when it was necessary for their nurture to permit them to follow the cows. At such time it is unnatural to separate the calf from its dam, when it is not taken to the butcher. The two are then usually disposed of together. It may be that during that time the law would regard the calf as covered by a mortgage upon the cow. . . . A description which will enable third persons, aided by inquiries which the instrument itself suggests, to identify the property conveyed is sufficient. Nothing short of this will import notice to purchasers.” To the same effect is Thorpe v. Cowles, 55 Iowa, 408.
The case of Winter v. Landphere, supra, is cited approvingly in Darling v. Wilson, 60 N. H. 59; S. C. 49 Am. Rep. *41305. But the court in this last case goes further and declares that “ there being nothing in the mortgage showing. an intention to create a lien upon the increase of stock mortgaged, the lien existing only as an incident to the mortgage, would, as between the parties, continue so long only as is necessary for the suitable nurture of the increase. This view is supported upon sound principles.” To our minds this view' cannot be sustained upon sound principles. The lien was created by the mortgage, and, so far as the mortgagor is concerned, was entirely independent of the nurture. The mortgage was a valid lien upon the increase, as against the mortgagor in possession, and he necessarily knew, when the mortgage was given, the young dropped, and the period of gestation, and hence there would seem to be no valid reason for terminating the lien, as against the mortgagor, merely because the period of “ suitable nurture ” had passed. Such nurture did not give the hen, and its termination could not take it away as against the mortgagor. As to such mortgagor the question of notice or insufficiency of description is not involved, for he had actual notice that such increase was, in fact, covered by the mortgage. But as to subsequent bona fide purchasers and mortgagees without notice the question is different. As to them, the period of nurture being passed, and the young being entirely separated from the mother, and not being mentioned in the mortgage, nor any longer connected with-the mother covered by the mortgage, they have neither actual nor constructive notice of the mortgagor’s rights and interests, nor anything to put them upon inquiry.
In the case before us the period of nurture had passed, and the calves were kept by the mortgagor in a field separated from the cows, so that a bona fide purchaser or mortgagee without notice would have been protected. "Was the plaintiff such mortgagee ? He took the mortgage to secure an indebtedness incurred many months before and not yet due, and without any new consideration. The mortgage, *42though requested, was purely voluntary, and gave the mortgagee no greater right or interest in the calves than the mortgagor possessed. Bowman v. Van Kuren, 29 Wis. 209; Body v. Jewsen, 33 Wis. 409; Bay v. Coddington, 5 Johns. Ch. 54; S. C. 9 Am. Dec. 268; Atkinson v. Brooks, 26 Vt. 569; S. C. 62 Am. Dec. 592. To constitute a bona fide purchaser or mortgagee, there must not only be an absence of notice, but also a payment of, or fixed liability for, the consideration. Nantz v. McPherson, 7 T. B. Mon. 597; S. C. 18 Am. Dec. 216; Cummings v. Coleman, 7 Rich. Eq. 509; S. C. 62 Am. Dec. 402; Wynn v. Carter, 20 Wis. 107.
By the Court.— The judgment of the circuit court is affirmed.