OPINION OP THE COURT.
Appellants levied an attachment on a-quantity of wool owned by O. S. and O. G. Keysor, partners • as Keysor Brothers. Appellee intervened, setting up a-chattel mortgage upon certain property described therein as follows:
“(1500) Fifteen hundred head of improved New Mexico, 3 year old ewes, together with increase, and branded “O’” on -right hip. Also wool clip from above ewes. The above ewes are now located on Keysor Bros. Ranch, 11 miles southeast of Wagon Mound, Mora County, New Mexico, together with all increase and offspring of said live stock.”'
The wool levied upon was wool clipped from the sheep mentioned in the mortgage after its execution and before the attachment. The mortgage was acknowledged in the following form:
“State of Colorado,
“County of Denver. — ss.
“This mortgage was acknowledged before me by O. Gf.. Keysor, this 11th dav of April, A. D. 1911.
“BERNARD C. BUB,
*438The appellants had no actual notice of the mortgage, although the same was regularly recorded. Appellants demurred to the intervening petition as follows:
“That the said petition of intervention does not state facts sufficient to constitute a cause of action for the following reasons, to-wit:
“(a) That the instrument upon which said petition of intervention is based and alleged therein to be a chattel mortgage and which is referred to therein, and a copy attached thereto as exhibit ‘A’ thereof is not acknowledged as required by the laws of the Territory, now State of New Mexico, and the acknowledgment thereof and thereon fails to fulfill the requirements of the laws of the Territory, now State of New Mexico.
“(b) That because of the defective acknowledgment aforesaid, the said instrument alleged in said petition of intervention was not entitled to be placed of record in the office of the Probate Clerk of Mora County, New Mexico, and the recordation thereof did not constitute any notice to the plaintiff herein, and the lien of plaintiff’s attachment is superior to such alleged chattel mortgage even though the same should be valid, which validity is hereby denied.
“(c) That the same alleged instrument, which is exhibit ‘A’ attached to the petition of the intervenor, even if not for other reasons invalid, is void as to the property attached by the plaintiff herein for the reasons that the property covered and included in said alleged chattel mortgage is not described with sufficient certainty.”
The court over-ruled the demurrer and the appellants elected to stand on the same. They afterwards stipulated among other things, some of the facts stated above. The defendants in the case defaulted.
' The court awarded judgment in favor of intervenor and directed the money realized from the sale of the wool (sold by stipulation of the parties) to be paid over to him. Appellants appeal from this judgment.
It is first argued by appellants that the mortgage is not properly acknowledged. The requirement of acknowledg*439ment is to be found in section 2361 Compiled Laws of 1897, in the following language:
“That hereafter all chattel mortgages, or other instruments of writing, having the effect of a mortgage or a lien upon personal property, shall be acknowledged by the owner or mortgagor and recorded in the same manner as conveyances affecting real estate * * * *”
This section was afterwards amended by section 1 of chapter 14 of the Laws of 1907, but in a particular not ■affecting the consideration of this case. The original requirements as to the contents of the certificates of acknowledgment in conveyances of real estate are to be found in section 3949 of the Compiled Laws of 1897, being a part of an act passed in 1852 and carried through the compilations of 1865 and 1884, and being in the following language:
“The certificate of acknowledgment shall express the fact of the acknowledgment being made, and also, that the person making the same was personally known to at least •one of the judges of the court, or to the officer granting the certificate, to be the person whose name is subscribed to the writing or a party to it, or that it was proved to be such person by the testimony of at least two reliable witnesses.”
Since that time forms of acknowledgment have been provided by statute, and declared to be sufficient in cases of all written instruments except commercial paper.
See sections 3945 and 3947 C. L. 1897. The form pre■scribed in Section 3945 is as follows:
“On this.............................................day of............................................., before me personally appeared....................................................................., to me known to be the person described in and who executed the foregoing instrument, and acknowledged that he executed the same as his free act and deed.”
1 It can hardly be contended, it seems to us, that the acknowledgment of the mortgage in question is a substantial compliance with the requirements of either section 3945 or 3949. Counsel cite in support of the sufficiency of the acknowledgment:
*440Wilson v. Quigley, 17 S. W. 891, in which case is cited, Hughes v. Sloan, 14 S. W. 660.
In both of those cases the omission to state that the person acknowledging the instrument was known to the officer, was held, not to vitiate the acknowledgment. But in those cases the certificate contained a recital which showed that the party acknowledging the instrument was known to the officer. But in this case there is no recital that the mortgagor acknowledged that he executed the instrument, or that the person who appeared before the notary was the person described in and who executed the instrument. The recital is simply that the instrument was acknowledged by O. G. Keysor. This will not do. This is not a substantial compliance with the statute.
2 It is next urged by appellant that the mortgage not being acknowledged, was not entitled to record and, consequently gave no constructive notice. The proposition is evidently sound. Section 18 of chapter 62 of the lows of 1901 expressly provides that an instrument not duly acknowledged shall not be entitled to be filed and placed of record, nor considered of record, though so entered. Under this statute the instrument was not entitled to record and, under the prevailing doctrine, gave no constructive notice.
3 It is further urged that the absence of a valid acknowledgment rendered the instrument void. The argument is clearly unsound. The general doctrine is that in the absence of statute expressly so providing, an acknowledgment is no part of an instrument, and is not necessary to its validity. 1 Cyc. 513; Kitchen v. Schuster, 14 N. M. 164, 176.
The argument is based upon the language of section 2361 of the Compiled Laws of 1897, where the imperative form “shall” is used. But nothing is contained in the act declaring the instrument to be void in case it is not acknowledged. It is to be further noted that a later statute, section 17 of chapter 62 of the laws of 1901 provides that an acknowledgment shall not be necessary to the execution of any instrument, unless expressly so provided by statute. Section 2361 cannot be held to expressly provide *441any such consequences of failure to acknowledge an instrument.
4 The description of the property in the mortgage is questioned for uncertainty. Appellee urges that the word “increase” is sufficiently broad to cover wool clipped from sheep and cites Alferitz v. Ingalls, 83 Fed. 964. The weight of authority seems, however, to be to the contrary. Alferitz v. Boagwardt, 58 Pac. 460; Stringfellow v. Sorrells, 18 S. W. 689; Pubert v. Unfried, 91 Pac. 776.
But we are not called upon to decide, nor do we, whether the word “increase” in a chattel mortgage, includes the annual clip of wool from sheep. The language used in this-mortgage precludes the giving of such effect to the word. If the word “increase” is to include the wool, then the' words, “also the wool clipped from said ewes” become superfluous and should be disregarded. This cannot be done-. Under the familiar general rule of construction, every word used by the parties to a contract must be given its full and fair meaning and operation. In this case, therefore, it is apparent that the parties intended to, and did, measure their respective rights as to the wool by the words, “also, the wool clipped from said ewes.”
Do those words sufficiently identify the property? It is argued that the description is uncertain because it is not stated whether the wool has been, or is to be clipped. This argument is palpably unsound. If any person were called upon to state a description of wool already clipped ’ from sheep, lie would necessarily describe it as a certain amount of wool located at a certain place. Wool, after it has been clipped from sheep, bears no further relation to the sheep in ordinary commercial transactions. The words here used necessarily refer to wool to be clipped from the sheep, and1 we assume that counsel for appellant would have no criticism of such description. We are not unmindful in this connection, of the -rule relied upon by appellants, that a chattel mortgage must clearly by its terms include after acquired property, or it will not be covered.
Jones on Chattel Mortgages, 5th Ed. sec. 17'3a.
But the property in this case is not strictly after acquired *442property as usually spoken of in tlie books, the property having a potential existence at the time of the execution •of the mortgage. The language used in the description ■clearly indicates and describes the sheep from which the wool was clipped, and clearly indicates an intention to sub - ject the wool to the mortgage, and is therefore sufficient.
We have then a case of a contest between an attaching creditor with no actual notice, and a mortgagee Avith a mortgage valid between the parties, but unacknowledged and, although recorded, improperly so, and furnishing no constructive notice.
To support the judgment, appellee relies upon three oases decided by the Territorial Court, but it avüI be seen that in neither of them ivas the question uoav before the court decided. In Ilfeld v. Baca, 13 N. M. 32, the question AAras as to the effect of the failure to record a deed of real estate, and the court there held, under Section 3953 C. L. 1897, which does not include creditors, that that section aatis intended for the protection of subsequent purchasers and mortgagees only. In Kitchen v. Schuster, 14 N. M. 164, the controversy was between a mortgagee Avith an unacknoAvledged and unrecorded mortgage and a subsequent purchaser of the chattels covered by the mortgage. But the question Avas as to Avhether the purchaser had actual notice of the mortgage, the court holding that if he had, the mortgage Avould prevail. In Bank v. Haverkampf, 16 N. M. 497, there Avas a controversy between the mortgagee and an alleged fraudulent transferee of some of the mortgaged property and also the trustee in bankruptcy of the mortgagor’s estate. The mortgage had been withheld from record for a long time and the question was whether this fact rendered the mortgage fraudulent in law, and the court held that it did not. No specific lions by attachment or otherwise had been obtained b3r the creditors. There is some language in this case which might justify the inference that creditors are in no instance included within the protection of the recording acts, but, as seen, no such question was before the court. The exact question in this case has never been decided in this jurisdiction.
Wc assume that the profession would unqualifiedly say *443that in this jurisdiction a chattel mortgage must be recorded in order to retain its priority over a subsequent attaching or execution creditor. But there is no specific; statutory provision to that effect, and such a conclusion can be reached only by construction. The only statute1 touching upon the question is section 2362 of the Compiled Laws of 1897, which is as follows:
"Every mortgage so filed shall be void as against the creditors of the person making the same, or against subsequent purchasers, or mortgagees in good faith, after the expiration of one year after the filing thereof, unless within thirty days next preceding the expiration of the term of one year from such filing, and each year thereafter the mortgagee, his agent or attorney, shall make an affidavit exhibiting the interest of the mortgagee in the property at the time last aforesaid, claimed by virtue of such mortgage, and if said mortgage is to secure the payment of money, the amount yet due and unpaid; such affidavit shall be attached to, and filed with the instrument or copy on file to which it relates.”
This is an old section, being sec. 4 of chapter 36 of the Laws of 1876, and has been retained ever since that time. The act of 1876 provided for the filing of the original mortgage which was to be retained by the recorder, and also provided that either an actual and continued change of possession of the chattels mortgaged, or the filing forthwith of the original mortgage with the recorder, must be had, or such mortgage should be void as against the creditors of the mortgagor and subsequent purchasers and mortgagees in good faith. In 1889 the legislature specifically repealed three of the sections of the act of 1876, but allowed the section above quoted to remain. It substituted for the filing of the original document with the recorder, a provision for acknowledgment and recording of the same, and the act now appears as section 2361 of the Compiled Laws of 1897, chapter 73, Laws of 1889. In this act the legislature omitted to provide that in case of failure to record the instrument, it should be void as to the creditors of the mortgagors. Since that time the law has remained un*444changed, except for a minor amendment which has been heretofore referred to.
5 It will be observed that section 2362 above quoted does not provide that the mortgage shall be void as against the creditors of the mortgagor unless recorded, but provides that in case of the failure to file a renewal affidavit within the stated time, it shall become void as to the creditors. It is apparent that the legislature has assumed-that the law during all these years has required the recording of chattel mortgages in order to preserve their priority as against creditors. Otherwise an absurd situation would be presented. If the .statute does not require the recording of a chattel mortgage as against creditors, then for one year after its execution, it would be valid, but at the end of the year it would become invalid, not because it had not been recorded, but because an affidavit of renewal had not been filed. If the mortgage had not been filed for record, then there would be no record of a mortgage concerning which the affidavit of renewal should be filed, and the whole section would thereby become nugatory. The act of 1889 is not a comprehensive act covering the whole subject of chattel mortgages, but merely is intended to change-the form of record notice to the world, of chattel mortgages. We therefore hold that section 2363 is sufficient regarding the recording of a chattel mortgage as against the creditors of the mortgagor.
For the reasons stated, the judgment of the- District Court will be reversed and the cause remanded with instructions to proceed in accordance with this opinion, and it is so ordered.