I wish it were possible to offer something which could be of use to our Royal Astronomer than merely thanks. Perhaps the enclosed catalogue may be of some little service on some occasion or other. I was obliged to bring it into that form by way of scrutinizing the real number of omitted stars, and find it now very useful when my brother, in sweeping, &c., observes stars which are not contained in Wollaston's Catalogue, to know immediately by this order of R. A. if they are in any of Flamsteed's omitted stars, and if they are, what number they bear in the catalogue of omitted stars, which number we find in the first column. The rest of the columns will want no explanation, except the last, which would not be complete, or even intelligible, without the assistance of the catalogue of omitted stars, and the notes to that catalogue, for they are short memorandums collected from the descriptions in the catalogue, and from the notes to some of the stars.
As our Index contains all the corrections and information which I possibly could collect, those corrections and memorandums of which I had the pleasure, about eighteen months ago, to write a copy for Dr. Maskelyne, will consequently be laid aside, else I ought to take notice that there are one or two errors and several omissions which should have been corrected in that copy, but with which it will now be needless to trouble you, sir.
"What has laid me under particular obligation to you, my dear sir, was your timely information, the August before last, of your having proposed the printing of the Index to the P. R. S. The papers were then in so incomplete a state, that it needed each moment which could possibly be spared from other business to deliver them with some confidence of their being pretty Correct.
Many times do I think with pleasure and comfort on the friendly invitations Mrs. Maskelyne and yourself have given
