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Rh where the annexed eye-draft will direct you to. My brother has swept that part of the heavens, and has many nebulæ there, but none which I must expect to see with my instrument. I will not write to Sir J. Banks or Dr. Maskelyne, or anybody, till you, sir, have seen it; but if you could, without much trouble, give my best respects and that part of this letter which points out the place of the comet to Mr. Wollaston, you would make me very happy.

, April 20, 1790. 2em I return you many thanks for the communication you were so good as to make to me this day of your discovery of a comet. I shall take care to make our astronomical friends acquainted with the obligations they are under to your diligence.

I am always happy to hear from you, but never more so than when you give me an opportunity of expressing my obligations to you for advancing the science you cultivate with so much success.

, the 21st April, Wednesday, 1790. 2em I am much obliged to you for your kind letter. The night before last was cloudy. Last night, or rather this morning, about half-past two, I got up to look for the