be but one such daughter' [This, you will see, is my little Mary] 'then to the use of such one or only daughter in tail and in default of such issue then to the use of the second and every other son of my said third son John severally and successively according to his respective seniority in tail and in default of such issue to the use of all and every the daughters and daughter of my said third son John as tenants in common in tail with cross remainders between or amongst them in tail and in default of such issue to the use of my fourth son Paul during the term of his natural life without impeachment of waste and from and after his decease then to the use of my grandson Paul the son of my said son Paul during his natural life without impeachment of waste and after the decease of my said grandson Paul to the use of the first and every other son of my said grandson severally and successively according to their respective seniority in tail and for default of such issue to the use of all and every the daughters and daughter of my said grandson Paul as tenants in common in tail with cross remainders between or amongst them in tail and if all the daughters of my said grandson Paul except one shall die without issue or if there shall be but one such daughter then to the use of such one or only daughter in tail and in default of such issue then to the use of the second and every other son of my said fourth son Paul severally and successively according to his respective seniority in tail and in default of such issue to the use of all and every the daughters and daughter of my said fourth son Paul as tenants in common in tail with cross remainders between or amongst them in tail,' &c. &c.