I have the honour to be, Sir, Your most obedient, humble servant, CAROLINA HERSCHEL. _August 2nd, 1786._ SLOUGH, NEAR WINDSOR. MISS HERSCHEL TO ALEX. AUBERT, ESQ. SLOUGH, _August 2, 1786_. DEAR SIR,— _August 1st_, in the evening, at 10 o’clock, I saw an object very much resembling (in colour and brightness) the 27 of Mr. Messier’s Nebulæ, except this object being round. I suspected it to be a comet; but a haziness came on before I could convince myself of its having moved. I made several figures of the objects in the field, whereof I take the liberty to send the first, that you might compare it with what I saw to-night. In Fig. 1 I observed the nebulous spot in the centre, a bright red but small star upwards, another very faint white star following, and in the situation as marked in the figure. There is a third star preceding, but exceedingly faint. I suspected several more, which may perhaps appear in a finer evening, but they were not distinct enough to take account of. In Fig. 2, _August 2nd_, are only the red and its following star: the preceding, in Fig. 1, is partly hid in the rays of the comet, and by one or two glimpses I had, I think it is got before it. In Fig. 3 I took the comet in the edge by way of taking in the assistance of another star of about the same size and colour as that in the centre. The only stars I can possibly see with the naked eye which might be of service to point out the place of the comet are 53 and 54 Ursæ Maj., from which it is at about an equal distance with the 14, 15, and 16 Comæ Ber., and makes an obtuse angle with them. I think it must be about 1° above the parallel of the 15 Comæ. I made these observations with my little Newtonian sweeper, and used a power of about 30: the field is about 1½ degree. I hope, sir, you will excuse the trouble I give you with my wag [_qy._ vague] description, which is owing to my being a bad (or what is better) no observer at all. For these last three years I have not had an opportunity to look as many _hours_ in the telescope. Lastly, I beg of you, sir, if this comet should not have been seen before, to take it under your protection in regard to A. R. and D. C. With my respectful compliments to the ladies, your sisters, I have the honour to be, Sir, Your most obedient, humble servant, CAR. HERSCHEL. DR. BLAGDEN TO MISS HERSCHEL. GOWER STREET, BEDFORD SQUARE, _August 5, 1786_. MADAM,—