Day, J.
I. We discover nothing in the contract sued on that is sufficient to support the conclusion that its perform-1. contract: lateral. uni anee is, upon the part of the defendant, optional, Whilst it may be competent for parties to make a unilateral contract, yet the intention of the parties should be, beyond question, plain and clear from the terms used, before a contract should receive such a construction. Burrett v. Dean, 21 Iowa, 423" court="Iowa" date_filed="1866-12-12" href="https://app.midpage.ai/document/barrett-v-dean-7093648?utm_source=webapp" opinion_id="7093648">21 Iowa, 423.
The contract in question is a mutual agreement, couched in reasonably apt and explicit terms, for an exchange of lands. The consideration moving to each, is the agreement of the other to convey. It is recited in the contract that Pyne agrees to deliver to Nowlin a warranty deed for certain premises, on or before the first day of April, 1874, in consideration whereof Nowlin agrees to convey to Pyne, by warranty deed, certain other premises, on or before the same date. N o condition is attached to the agreement of either party. The contract of Pyne to convey appears to be just as absolute as that of Nowlin. True, the contract recognizes the existence of the possibility of Pyne’sfailing to perform the agreement. But the contract does not create this possibility. It would have existed if no allusion had been made to it in the contract. If this agreement is optional upon the part of Pyne, it must also be so upon the part of Nowlin^ and we have the anomaly of a legal contract, between competent parties, resting upon a valid consideration, which, nevertheless, neither party can enforce against the other. The court, we think, erred in sustaining the first ground of the demurrer.
II. The sustaining of the second ground of demurrer is equally erroneous. The contract creating an obligation upon 2__: dam_ ages; waiver, the part of both parties to it, to perform its con-¿(itioxis, the law awards appropriate damages for its breach. The contract was made in the fall of 1873, and stipulated that Nowlin was to have possession of the premises *169to be conveyed to liim in time to do bis fall plowing thereon. It is claimed that the provision of the contract that Pyne, in case he failed to convey, shall pay Nowlin for all plowing done by him on said land, and shall recognize any contract of rental thereof made by Nowlin, contains a stipulation for all the damages which are to be recovered because of a breach of the contract. This position would be correct if the parties to a contract must stipulate for the damages to be recovered, in order that they may recover any. But the law, of itself, attaches to the breach of every contract the right to recover proper damages. That the parties have expressly provided for the payment of some of the damages, which, perhaps, the law would have awarded without such provision, cannot be construed to be a waiver of the right to recover other damages which the law permits. In order to defeat the recovery of such damages, it must clearly appear that the parties have stipulated for all the consequences which they intend shall follow a breach of their agreement. It is plain that this agreement merely refers to certain incidental damages, which might not arise at all, whilst as to the principal damages, and which are certain to follow a breach of the contract, if it was an advantageous one to the plaintiff, the contract is silent.
REVERSED.