We are still in Hanover, and find it a most agreeable place. I have been in Göttingen, where Jacob went along with me, and the King’s telescope arrived there in perfect order. The Society of Göttingen have elected me a member. We long very much to hear from you, as we have never had a letter yet. This is the fourth we have sent you, and we hope you received the former ones. This day fortnight we have fixed for our setting out from this place, and be assured that we shall be happy to see _old England_ again, though _old Germany_ is no bad place. Yesterday and the day before I have seen the Bishop of Osnaburgh and the Prince Edward. If an inquiry should be made about our return, you may say (I hope with truth) that we shall be back by about the 24th of August. Adieu, Lina. _24th._—I registered some sweeps in present time and Pole distance. Prince Resonico came with Dr. Shepherd to see the instruments. I swept from ten till one. * * * * * _28th._—I wrote part of Flamsteed’s Catalogue in the clear. It was a stormy night, we could not go to bed. _29th._—I paid the smith. He received to-day the plates for the forty-foot tube. Above half of them are bad, but he thinks there will be as many good among them as will be wanted, and I believe he intends to keep the rest till they return. Paid the gardener for four days which he worked with the smith. I registered sweeps to-day. By way of memorandum I will set down in this book in what manner I proceed. I began some time ago with the last sweep which is booked in the old register (Flamsteed’s time and P. D.), viz., 571, and at different times I booked 570, 569, 568, 567, 566, 565. To-day I booked 564; 563 is marked not to be registered; 560 and 561 I was obliged to pass over on account of some difficulty. The rest of the day I wrote in Flamsteed’s Catalogue. The storm continued all the day, but now, 8 o’clock, it turns to a gentle rain. _30th._—I wound up the sidereal timepiece, Field’s and Alexander’s clocks, and made covers for the new and old registers. _31st._—I booked 558, 557, and 554; 556, 555, I was obliged to leave out on account of some difficulty. _Mem._—I find I cannot go on fast enough with the registering of sweeps to be serviceable to the Catalogue of Nebulæ. Therefore I will begin immediately to recalculate them, and hope to finish them before they return. Besides, I think the consequences of registering the sweeps backwards will be bad. [Sidenote: 1786. _Slough.—The first Comet._] _August 1._—I have counted one hundred nebulæ to-day, and this evening I saw an object which I believe will prove to-morrow night to be a comet. _2nd._—To-day I calculated 150 nebulæ. I fear it will not be clear to-night. It has been raining throughout the whole day, but seems now to clear up a little. 1 o’clock.—The object of last night _is a comet_.