delivered the opinion of the court:
This was assumpsit brought by the appellee, against appellant, to recover damages for the alleged breach of a contract to sell and convey to him a certain described portion of lot 3, in block 8, in Aaron Whitney’s addition to the town of Belvidere, in Boone county, Illinois, said portion of said lot being correctly described in the declaration by metes and bounds. A general demurrer to the declaration was overruled, and the defendant, appellant here, caused exceptions to be entered to such action of the court, but afterwards applied to the court for, and obtained, leave to plead over, and in pursuance of such leave filed a plea of general issue and a plea of the Statute of Frauds. Issue was joined, the cause submitted to a jury, verdict for plaintiff in the sum of §1000 returned, defendant’s motion for new trial and in arrest of judg*280ment overruled, and judgment rendered against the defendant on the verdict. The second, ground of the motion in arrest of the judgment was, “the declaration is insufficient to maintain the action.” Defendant prosecuted an appeal to the Appellate Court for the Second District, where the judgment of the circuit court was affirmed^ and has prosecuted this appeal from the judgment of the Appellate Court.
The first question arising upon the record is whether the appellant, by pleading over, shall be deemed to have waived the right to afterwards insist the declaration is insufficient. Appellee insists the invariable rule is that pleading to the merits is a waiver of all grounds of objection to the sufficiency of the declaration. We cannot assent to this. The rule, as we understand it, is, that pleading over to the merits will aid a defective statement of a good cause of action but will never assist a statement of a defective cause of action. (Matson v. Swanson, 131 Ill. 255; Chicago and Eastern Illinois Railroad Co. v. Hines, 132 id. 161; Shreffler v. Nadelhoffer, 133 id. 536.) We may therefore inquire whether the alleged defects in the declaration were such as no cause of action appeared.
Two grounds of demurrer were urged: First, that it appeared from the face of the declaration there was no written contract by which appellant agreed to sell to the appellee the premises described in the declaration; and second, that the lease was void as a contract of sale by reason of lack of mutuality.
The declaration alleged the appellant contracted to lease the appellee the premises as hereinbefore described, and averred the contract was reduced to writing, but that said premises were erroneously described in said writing as “Lot No....., in assessor’s subdivision of Whiting’s block No. 8, in the town (now city) of Belvidere, in Boone county, Illinois,” and that under said lease appellee took possession of the premises intended to be described in the lease and held possession thereof, and paid rent there*281for to appellant. The.lease contained the following covenant, viz.: “And it is further agreed that this lease may be continued from year to year under the same terms, at the option of the said party of the second part, for a period not to exceed five years; and should said party of the second part desire to surrender possession after the first year, he may do so by giving to said Marske at least sixty days’ previous notice of his intention so to do; and should said Marske desire to sell said premises, he may do so by giving to said Willard sixty days’ previous notice and by first giving to said Willard the first opportunity to purchase said premises, provided he will pay as much as any other person.”
The argument of counsel as to the first of these grounds is, that the contract as executed by'the parties and set out in the declaration is void for ambiguity, in a court of law, for the reason the number of the lot is omitted. It is insisted the ambiguity is patent, and that the rule is, parol evidence is inadmissible, in actions at law, to remove a patent ambiguity, and many authorities are cited as in support of that proposition. Some confusion exists in the authorities, arising, it is believed, out of incorrect meanings attached to the terms “latent” and “patent” ambiguities, for it is certainly not true that, as the term “patent ambiguity” is often understood, it is an inflexible rule that extrinsic evidence is inadmissible to explain the ambiguity. Parsons, in his work on Contracts, says the distinction between the patent and the latent ambiguity originated with, or at least was first stated clearly by, Lord Bacon, who also declared the rule that a patent ambiguity “is never holpen by averment.” (2 Parsons on Contracts, 557.) The same author further says: “The rules of Lord Bacon rest entirely upon the principle the law will not make, nor permit to be made, for parties, a contract other than that which they have made for themselves. They can have no other basis than this, and so far as they carry the principle into effect they are good *282rules, and no further.” And he declares: “Those rules are less regarded of late than they were formerly, and are intended to enable the court to distinguish between cases of curable and those of incurable uncertainty, and to carry the aid of evidence as far as it can go without making for the parties what they did not make for themselves, and to stop there.” (Ibid. 563.) The same learned author further remarked: “If the meaning of an instrument, by itself, is intelligent and certain, extrinsic evidence is admissible to identify its subjects or its objects.” Ibid. 564.
In Price v. Page, 4 Ves. 679, it was well said: “The rule that no evidence is admissible to remove a patent ambiguity would be strictly correct if by patent ambiguity we mean that state of uncertainty which exists where it is perfectly clear, from the face of the instrument to be construed, either that no certain subject has been selected upon which the instrument can operate or take effect, or that no certain person or persons have been selected to be benefited or affected, or that no certain purpose has been indicated in respect to the subjects or objects.” The same doctrine is announced in Gord v. Needs, 2 M. & W. 129, and accords fully with our view as to the correct definition of a patent ambiguity.
This court, in the case of Bulkley v. Devine, 127 Ill. 406, said (p. 409): “Extrinsic proof is always competent to identify the subject matter of a contract if necessary, and to admit it in no way violates the rule that parol testimony is never admissible to contradict or vary the terms of a written contract.” In the case last cited, which was an action at law to collect rents, the premises were described in the lease as being in the city of Chicago, “and described as follows, to-wit: the house known and numbered as No.....Thirty-second street,” and it was ruled that proof that appellant took possession of a certain house, and held the same and paid rent therefor, was competent to be received for the purpose of removing the *283uncertainty as to the identity of the property intended to be leased. The declaration in the case at bar avers that the appellee took possession of the premises under and by virtue of the lease, and paid rent therefor to the appellant, who received such rent from the appellee as being due and payable under the terms and conditions of the lease. It is perfectly clear from the lease, considered within itself, that certain particular premises had been selected by the parties upon which they intended the instrument should operate. The ambiguity occasioned by the defect or omission in the description was not a patent ambiguity, within the accurate and proper definition of that term, but was such as “could be holpen by averment” and removed by parol proof. In respect of this ground of objection the declaration was not obnoxious to the demurrer.
Nor is the other ground of objection, that the contract was not mutual, tenable. It was not essential, in order this contract should be regarded as mutual, that the appellee should be bound by its terms to buy the property upon receiving notice that the appellant desired to sell it. He wás under obligations to surrender the property should the appellant desire to sell, though his lease had not expired, and the consideration of his obligation in this respect was the undertaking of the appellant that he would give the appellee notice of his desire to sell and accord him the privilege of becoming the purchaser. The contract between them created mutual obligations upon the parties to it and is binding upon both.
Nor is there any force in the position that the contract providing for the sale and purchase of the property rests partly in writing and partly in parol, and is therefore void, under the Statute of Frauds, as a contract for the sale and conveyance of lands. The contention in this respect is, the contract does not fix the price to be paid or the terms and time of payment. The true construction of the contract is, that appellant must give the appellee sixty *284days’ previous notice of his intention to sell, and give him the option, during that period of time, of purchasing the property in preference to any other person who desired to buy, at the same price such proposed purchaser was willing to pay'and upon the same terms appellant was willing to accord to such proposed purchaser.
Nor can we assent to the proposition, urged with much earnestness, that the contract as to the sale is so “vague, uncertain and indefinite’’ that it cannot be enforced. The undertakings and obligations of the respective parties fully appear under the construction which, as we have indicated hereinbefore, we think should be given to the instrument. We think the declaration set out a good cause of action.
The objections preferred to the ruling of the court upon questions relative to the admissibility of testimony and the giving or refusing of instructions are in the main fully disposed of by what has been said heretofore as to the character of the ambiguity in the lease and contract, and as to the true interpretation of that portion of the instrument which, as we think, constituted a contract of sale. The rulings of the court are in harmony with the views expressed herein, and are approved.
One instruction given for the appellee did not touch upon any principle we have discussed, but related solely to the measure of damages to be applied in case of a breach of the contract, and is as follows:
“The court instructs you that the measure of damages in this case is the difference between the price at which the plaintiff had the right, under the contract, to purchase the premises, and the actual value of said premises at the time of the sale of the same by the defendant to the witness Thomas Cornish.”
The criticism of the instruction is, it submitted to the jury, for their determination, the true interpretation of the contract as to the price at which appellee had the right, under the contract, to purchase the premises. The *285court, in a preceding instruction, interpreted the contract for the jury, and advised them, distinctly and explicitly, as to the terms and conditions upon which appellee had the right, under the contract, to purchase the property, and the instruction complained of could but have been understood to advise the jury the measure of damages was the difference between the price at which appellee might so purchase the property and the actual value thereof.
It is urged the Appellate Court erroneously held it did not appear the bill of exceptions contained all the evidence given upon the trial, and because of such erroneous ruling refused to consider whether the evidence supported the judgment. We find from the judgment of the Appellate Court that that court, to quote from the judgment, “diligently examined and inspected as well the record and proceedings aforesaid as the matters and things therein assigned for error,” and adjudged, to again quote from the judgment, “that in said record there is no error.” We find nothing otherwise appearing in the record of the proceedings of the Appellate Court to indicate that court considered the bill of exceptions insufficient to bring in review the evidence heard upon the trial of the cause. The Appellate Court affirmed the judgment and did not incorporate in its judgment a finding of facts, and it is therefore to be assumed that court found the facts the same way the trial court found them. (Rev. Stat. sec. 87, chap. 110; Pennsylvania Co. v. Keane, 143 Ill. 172.) Such judgment in the case at bar is conclusive upon this court “as to all matters of fact in controversy in the cause.” (Rev. Stat. sec. 87, chap. 110; Bernstein v. Roth, 145 Ill. 189.) The opinion of the Appellate Court is no part of the record of the cause in that court, and cannot be resorted to in order to support a contention that the recitals of the judgment do not truly set forth the action of the court. Bernstein v. Roth, supra.
The judgment must be and is affirmed.
Judgment affirmed.