There, a father and his two sons carried on the business of lace or plain net manufacturers under a deed of partnership which included covenants (among others) to the following effect: Neither of the sons was, without the consent of the father, to be directly or indirectly engaged in any trade or business except on account and for the benefit of the partnership; both the sons were bound to give so much time and attention to the business as the proper conduct of its affairs required; the father was not bound to give more time or attention to the business then he should think fit; if the father should die his share was to accrue to the sons in equal shares subject only to their paying out to his representatives the value of his share and interest at his death as ascertained by an account to be made as on the day of his death with all proper valuations, but without any valuation of or allowance for goodwill, which goodwill was to accrue to the sons in equal shares.