Where a vendor delays making a conveyance beyond the agreed time, it may be assumed that those jurisdictions which hold that a vendor acting in good faith is not liable in damages for loss of the bargain where he is unable to perform his contract owing to a defect of title, would apply a similar rule where for the same reason the vendor is unable to perform on the agreed day.54 Where the purchaser becomes liable for delay the normal rule of damages in an action at law would seem to be the rental value of the premises less any advantage which the buyer may have had by retaining the whole or part of the purchase money,55 together with any foreseeable consequential damages.56 Most of the decisions, however, are in equity where, as an adjunct to specific performance, damages for delay are allowed.57 If the delay is due to the purchaser's fault he is liable for interest, though the vendor has received no rents and profits and can therefore credit him with none.58