May I, as a friend, urge on you the necessity of doing so?" "The Dop Doctor" by Clotilde Inez Mary Graves

He understood at once the necessity for the trip to Canton. "Boy Scouts in a Submarine" by G. Harvey Ralphson

Or she might find things such that her uncle must see the necessity of turning him away; as the place belonged to her, he would never go dead against her! "Donal Grant" by George MacDonald