The respondent, being the owner of land at Forbes comprised in two Crown Grants (that registered in vol. 4227 fol. 128 and that registered in vol. 3317 fol. 142), by a lease dated 27th April 1951, leased part of this land to Mullins and Chislett for a term of five years from 14th May 1951, i.e. to expire on 14th May 1956. This document contained an option to purchase the whole of the land comprised in the two Crown Grants. It was in these terms: "The Lessees shall have the right at any time prior to the first day of February, 1956, by giving three months written notice to the lessor to that effect, to purchase the whole of the land and improvements comprised in the two said Crown Grants, for the sum of three thousand pounds (£3,000 0s. 0d.) in which case the following provisions shall apply: (a) With the notice of exercise of option the lessees shall pay a deposit of three hundred pounds (£300 0s. 0d.) and the balance shall be paid in cash on completion of sale which shall take place at the expiration of the said period of three months notice, but not before 1st July 1952. (b) Such sale shall be on and subject to such of the usual terms and conditions of sale of the Real Estate Institute of New South Wales as shall be applicable to sales of land of like tenure under like circumstances." At the time the lease was granted, Mullins and Chislett were partners and they carried on their partnership business upon the land so leased to them, but in 1955 Chislett commenced a suit against Mullins in which it was eventually determined by a decree dated 26th September 1956, that the partnership was dissolved as from 22nd October 1951. While this suit was pending, and seemingly because the differences between Mullins and Chislett made the immediate exercise of the option impossible, a deed was executed on 23rd January 1956, by Chislett (called the Plaintiff), Mullins (called the Defendant) and Peters. Clause 3 of this deed was as follows: "Peters agrees that the time for exercising the alleged option if any and if now exercisable shall be and is hereby extended until the expiration of thirty days notice in writing from Peters to the Plaintiff and the Defendant or their respective Solicitors such notice not to be given prior to the First day of March One thousand nine hundred and fifty-six." Peters never gave any notice pursuant to this clause but on 25th June 1956, he did give Mullins and Chislett a notice to quit expiring on 27th July 1956. This notice to quit was given pursuant to s. 62 (5) (g) (ii) of the Landlord and Tenant (Amendment) Act 1948-1954 on this ground, "that the premises - not being a dwelling house - are reasonably required for occupation by the lessor". As to this, Myers J. made the following finding: "The defendant has established that ground before me, and therefore it follows that on the expiration of the notice to quit any relationship of landlord and tenant which may have existed between the parties came to an end." This finding was, I think, justified by s. 67 of the Landlord and Tenant (Amendment) Act: Read v. Morris [1] . On 26th September 1956, Mullins and Chislett, describing themselves as lessees, gave the respondent a notice purporting to exercise the option and tendered a sum of £300. The respondent refused to treat this as an effective exercise of the option, and it was to enforce the contract of sale which the appellants claimed to have been constituted thereby that this suit for specific performance was brought. Before the suit was brought, the balance of purchase money, namely £2,700, was tendered to and rejected by the respondent.