At this moment, dearest friend, after having closed the letter already, I begin to feel a doubt whether you have received my last letter, which I sent you about eighteen days ago.
I am uncertain because you make no mention of its contents: a letter from me to Zigesar; one bar of music (full score), which was to be added at the end of Lohengrin's tale in Act III; the cut I want in this scene, namely the omission of the second part of Lohengrin's tale, which you also do not mention and which I assume you agree to; and my request that you send me a proof of the libretto, now too late.
If you have not received this letter, kindly let me know at once, because in that case I should like to send you the aforementioned additional bar, which might still arrive in time for the general rehearsal.
Richard Wagner
Source: Project Gutenberg eBook #3835, Correspondence of Wagner and Liszt — Volume 1, No. 38