Just before the end of the season 1879–80, Irving completed with Tennyson an agreement to play _The Cup_. This play, which he had not long before finished, he had offered to Irving. It had not yet been seen by any one, and he was willing that it should not be published till after it had been played. The play required some small alterations for stage purposes—little things cut out here and there, and a few explanatory words inserted at other places. Tennyson assented without demur to any change suggested. As it has been said that Tennyson was absolutely set as to not altering a line for the stage, let me say here, after an experience of his two most successful plays that any such statement was absurd. Of course he was careful of his rights. Every one ought to be careful in such a matter, and to him there was special need. His manuscript was so valuable that it was never safe; and in other ways he had to be suspicious. Years afterwards he told me that one of his poems had been sold by a critic in America with errors in it which had been corrected. “I hate the creature! He said he was owner of the proof!” Perhaps it was for this reason he was so careful when a play was being printed for stage use. He always wished his own copy returned with the proof. In his agreements he had a clause that the licensee should not without his consent make any alteration in the play. This was absolutely right and wise; it is the protection of the author. The time for arranging changes is _before_ the agreement; then both parties to the contract know what they are doing. In no case did Tennyson hesitate to give Irving permission to make changes. Like the good workman that he was, he was only too anxious to have his work at its best and highest suitability. Tennyson had in him all the elements of a great dramatist; but unhappily he had little if any technical knowledge of the stage. Each art and each branch of art has its own technique. Though a play, like any other poem, has its birth, the means of its expression is different. A poem for reading conveys thoughts by words alone. A poem for the stage requires suitable opportunity for action and movement—both of individuals and numbers. Sound and light and scene; music, colour and form; the vibration of passion, the winning sweetness of tremulous desire, and the overwhelming obliteration that follows in the wake of fear have all their purpose and effect on the stage. Inasmuch as on the one hand there is only thought, whilst on the other there is a superadded mechanism, the two fields of poetry may be fairly taken to deal in different media. In his later years when Tennyson began to realise in his own work the power of glamour and stress and difficulty of the stage, he was willing to enlist into his service the skill and experience of others. Had he begun practical play-writing younger, or had he had any kind of apprenticeship to or experience of stage use, he would have been a great dramatist.