The refusal to permit defendants to prove-the circumstances under which the contract was made, in order to enable the court to rightly construe it, was error. Parol evidence to vary the terms of a written contract is-one thing; such evidence to enable the court to say what the parties to a contract intended to express by the language adopted in making it, is quite another thing. The former is not permissible. Steele v. Schricker, 55 Wis. 134. The latter is permissible and is often absolutely essential to show the real nature of the agreement. Sigerson v. Cushing, 14 Wis. 527; Lyman v. Babcock, 40 Wis. 503; Nilson v. Morse, 52 Wis. 240; Nash v. Towne, 5 Wall. 689; Merriam v. U. S. 107 U. S. 437; Wells v. Alexandre, 130 N. Y. 642; Cooper v. Lansing W. Co. 94 Mich. 272. Both rules are elementary and do not conflict in the slightest degree with each other. One prevents a written contract from being varied by parol evidence either in regard to- what was said at the time it. was made or prior thereto; the other aids in determining what the contract is when its language, either in the literal sense or as applied to the facts, is obscure. The one is a rule to preserve the contract as expressed in writing; the other is a rule of construction to determine what the contract, as expressed, is, it being kept in mind that the mutual
The rule of construction above discussed is applicable to ithe contract in question. It obligated Gerling to “ complete all the excavating appellants desire to have done by September 1st, 1892.” The word “ desire ” was used in the ■present tense, clearly indicating that some particular work, with reference to which the contract was made and which ■had been the subject of a verbal agreement upon which the ■written contract was based, was to be entered upon by Ger-
Notwithstanding what has been said, the judgment is right on the undisputed facts, and therefore cannot be disturbed. It was the duty of appellants to prepare the ground for Ger-ling’s operations by causing the'engineer to set the grade ■stakes. It is perfectly obvious, from the nature of the work to be done and from the evidence as well, that the setting of the stakes was an absolute prerequisite to the doing of the work, .and that it was appellants’ duty to seasonably perform that condition. ' They neglected to set any of the stakes till about 4wo months after the contract was made, and neglected thereafter to perform their duty in that-regard so that the work ■could be prosecuted without interruption. The jury found that the work was materially delayed by defendants’ failure, as indicated, and such is the uncontroverted evidence. Two months were lost to Gerling at the start, and the progress of the work was injuriously interfered with from time to time by defendants’ neglect, down to the final discontinuance of it in June, 1893. The evidence is ample and un-contradicted to show that work was commenced within three -days after, the stakes were set, and that thereafter it was prosecuted with diligence, and by the use of as many teams
The rule is, without exception, that if the default of one party to a contract, or of some person for whose conduct he is' responsible, so interferes with performance by the other party by the time agreed upon as to prevent it, by the exercise of such diligence as both parties contemplated would be' devoted to the work when the contract was made, the element of time will be deemed to have been waived as a matter of law. Dumke v. Puhlman, 62 Wis. 18; Stewart v. Keteltas, 36 N. Y. 388; Weeks v. Little, 89 N. Y. 566; Wait, Engineering & A. Jur. §§ 325, 326. It is certainly a very salutary rule that a person cannot, by his own breach of duty, prevent the performance of a contract by the day set therefor, and then insist on damages for the default so caused. That applies to this case, and precludes any recovery on the counterclaim for stipulated damages for delay, and renders the error of the court in rejecting parol evidence, offered in aid of construing the contract, harmless.
The only remaining question is, Was there a waiver of the engineer’s certificate as to the amount of excavating done in the spring of 1893 ? The evidence is all one way and conclusive that payments were made, from first to last, without insisting on the engineer’s certificates; that about three quarters of the entire amount earned were so paid; that when payment of the balance earned was refused, such refusal was not grounded on nonperformance of the condition-in regard to engineer’s certificates, but on the idea that the work was not completed in time, and that the stipulated damages for the delay exceeded the balance earned under the contract. The clear indications are that the condition in regard to certificates was ignored from the start. One
It is not intended by what is here said to announce the doctrine that failure to comply literally with a contract as to furnishing progress certificates will operate as a matter of law as a waiver of all such certificates or of a final certificate of the amount of work done, or of the completion of the contract work, where such certificates are required by the contract; but that evidence of that character, sufficient
What has been said renders several questions argued in appellants’ brief immaterial. The waiver of the element of time in the contract, and of the right to engineer’s certificates of work done as a condition precedent to payment therefor, was established by the uncontx’overted evidence. The amount of work actually done and payments made thereon were likewise established. There was no material controversy on the evidence requiring a finding by the jury. The finding in plaintiff’s favor in the special verdict, as to the amount due, might properly have been embodied in a general verdict under the direction of the court.
By the Court.— The judgment is affirmed.