It was not an unknown circumstance for the ink to freeze while she was attending to take down her brother’s observations. Footnote 32: These words had apparently to be sought for in the dictionary, as they are inserted in pencil in blank spaces left for the purpose. Footnote 33: To her brother, in Upton Church, near Slough. Footnote 34: The paper referred to is probably one on “The Aberrations of Compound Lenses and Object Glasses,” read at the Royal Society on the 22nd March, 1821. Footnote 35: Dietrich Herschel died towards the end of January, 1827. Footnote 36: See p. 10. Footnote 37: The author of this hasty address feels no slight gratification in having been present on the 1st June, 1821, at the last observations with the twenty-foot reflector, in which Miss Herschel was engaged. He remembers also, not without regret, but with becoming gratitude, that the mirror used for his improvement, on the occasion was inserted, for the last time, in the tube, by the hands of Sir William Herschel.—_Memoirs Astronomical Society_, Vol. III., p. 409. Footnote 38: This extract, as it bears on the subject of the recognition of Miss Herschel’s labours, is inserted here, though somewhat before its time. Footnote 39: “Motions were then made for passing these several resolutions, and the same were carried unanimously.”—_Monthly Notices_, vol. iii. p. 91. Footnote 40: Of President. Footnote 41: An allusion to his approaching marriage, when he would resign his Fellowship. Footnote 42: The Destroying Angel has once more passed by. Footnote 43: Discourse on the study of Natural Philosophy. Footnote 44: See p. 72, 1786. Footnote 45: In the Quarterly Review. Footnote 46: Sir John for ever! Footnote 47: Here, indeed, is a hole in the sky. Footnote 48: A brother of Lady Herschel’s. This gentleman and his brothers were in the habit of writing to Miss Herschel during her nephew’s absence at the Cape, keeping her informed of the latest news, and showing her every kind and thoughtful attention. Footnote 49: This lady, the daughter of Dietrich Herschel, proved a most true, affectionate, and trustworthy friend to the last. See her letter on Miss Herschel’s death. Footnote 50: “On the Influence of the Irregularities of the Earth on Geodetic Operations, and their Comparison with Astronomical Determinations.” Footnote 51: How d’ye do? Footnote 52: Betrothed. Footnote 53: On the Exchange. Footnote 54: The whole family party assembled at Christmas in the tube of the great telescope, and sang a ballad composed for the occasion. Footnote 55: