In a word, I must congratulate you on the appearance of this work, as on another great achievement; and if—as fame reports—it is only the forerunner of another on the early discovery of America, it is only another proof that your funds are inexhaustible! May you have many years of health and strength granted you to pour them forth; and may each succeeding contribution to our knowledge afford yourself as much delight in its production as it is sure to do your readers in its perusal. Miss Gibson writes word that you have more than once enquired of her when my Cape observations will appear. No one can regret more than myself the delay which has taken place, but it has been unavoidable, as I have had every part of the reduction to execute myself, and the construction of the various catalogues, charts, and minute details of every kind consume a world of time, quite disproportioned to their apparent extent. However, I have great hopes of being able to get a considerable portion, in the course of the next year, into the printer’s hands. Some of the nebulæ are already in course of engraving. Perhaps the subject which has given me most trouble is that of the photometric estimation of the magnitudes of Southern stars and their companions with the Northern ones. A curious fact respecting one of them—7 Argus—has been communicated to me from a correspondent in India (Mr. Mackay), viz.: that it has again made a further, great, and sudden step forward in the scale of magnitude (you may perhaps remember that in 1837–8, it suddenly increased from 2.1 m to equal α Centauri). In March, 1843, according to Mr. Mackay, it was equal to Canopus. “α Crucis,” he says, “looked quite dim beside it.” When I first observed it at the Cape it was very decidedly inferior to α Crucis. Believe me, my dear Sir, ever yours, most truly, J. F. W. HERSCHEL. I must not forget to wish you a “merry Christmas and many happy returns of the season” in English fashion. 83. BALZAC TO HUMBOLDT. BERLIN, HOTEL DE LA RUSSIE, 1843. MONSIEUR LE BARON:—May I hope on my arrival in Potsdam, next Monday, by the 11 o’clock train, to have the honor of seeing you, for the purpose of presenting my respects. I am merely passing through this city, and you will therefore excuse the liberty I take in announcing the time of my visit. May I hope that you will receive it as a proof of my ardent desire to add some new recollections to those of the “Salon de Gérard.” Should I be so unfortunate as to miss seeing you, this little note will assure you at least of my desire to recall your remembrance of me otherwise than by a card. Be kind enough, then, Monsieur le Baron, to accept the assurance of my most respectful admiration of