^{page 194 note *} In the Comptes rendus the name is given as A. Couper; in the Annales de chim. et de phys. as A. S. Couper.

^{page 195 note *} cccxlvi. 291 (1906)

^{page 196 note *} The house, which is in the street, is now converted into shops, and the garden partly covered with buildings.

^{page 196 note †} Hamilton, Alexander, M.A. 1851, D.D. 1872; United Presbyterian minister, Kilmarnock 1855–1872, Brighton 1871–1896. Died at Brighton, 1902Google Scholar.

^{page 196 note ‡} Afterwards Geheimrat, and director of the engineering works in connection with the navigation of the Rhine.

^{page 198 note *} Comptes rendus, xlv. 230–232. See Appendix to this paper, p. 235.

^{page 198 note †} Ibid., xlv. 228–230.

^{page 198 note ‡} Proceedings of the Royal Society of London, vii. 37–40.

^{page 199 note *} Comptes rendus, xlvi. 1157–1160. See Appendix to this paper, p. 237.

^{page 199 note †} Ibid., xlvi. 1107–1110. See App., p. 266.

^{page 199 note ‡} xvi. 104–116. See App., p. 240.

^{page 199 note §} [3], liii. 469–489. See App., p. 241.

^{page 199 note ║} 213–217. See App., p. 267.

^{page 199 note ¶} Comptes rendus, xlvii. 378–380.

^{page 199 note **} Ler: d. Deutsch. Chem. Ges., xxiii. 1304.

^{page 200 note *} Liebigs Annalen, cvi. 129–159.

^{page 200 note †} Ibid, civ. 133, Anm.

^{page 200 note ‡} Ibid, cvi. 129–159.

^{page 201 note *} Liebig's Annalen, cvi. 136.

^{page 202 note *} Misprinted in the Comptes rendus “C_nH_n(1−2)+2.” See Liebig's Annalen, cvi. 154.

^{page 204 note *} In the Comptes rendus “C²” is printed in error for “O².”

^{page 207 note *} cx. 51–66 (Heft 1, issued 16th April 1859).

^{page 207 note †} “Wie es Laurent annahm.”

^{page 208 note *} In the Phil. Mag. misprinted nC²M⁴- mM. See Ann. de chim. et phys. (3), liii. 480, line 10 from top.

^{page 208 note †} Butlerow has obviously here in mind Kekulé's general expression C_nH_2n+2.

^{page 211 note *} In the paper the first “O”has been omitted in error.

^{page 211 note †} Misprinted “C²”for “O²”in the paper.

^{page 214 note *} In the paper the first “OH” has been omitted in error.

^{page 215 note *} In the paper the formula the dotted lines joining the six carbon atoni3 have been omitted in the paper.

^{page 215 note †} Misprinted “H” for “O—OH”

^{page 217 note *} Rép. 20–24.

^{page 217 note †} Rép. 49–52.

^{page 219 note *} Compare also von Meyer, Ernst's Geschichte der Chemie, Leipzig, 1889, S. 270, Anm. 3Google Scholar.

^{page 219 note †} Liebig's Annalen, cxlvi. 260 (Heft ii., issued on 6th May 1868)Google Scholar.

^{page 219 note ‡} S. 269.

^{page 220 note *} Page 829.

^{page 220 note †} Page 270.

^{page 220 note ‡} I Comptes rendus, xlvi. 1107–1110.

^{page 220 note §} Ibid., xxxiv. 850–851, séance du lundi, 31 May 1852.

^{page 221 note *} Comptes rendus, xxxviii. 32–34, séance du lundi, 9 Jan. 1854Google Scholar.

^{page 222 note *} Comptes rendus, xxxix. 122–125, séance du lundi, 10 juillet 1854.

^{page 223 note *} xlvi. 1107–1110.

^{page 227 note *} Liebig's Annalen, cccxlvi. 290.

^{page 227 note †} Comptes rendus, xlvi. 1238, séance du lundi, 21 juin 1858Google Scholar.

^{page 228 note *} Liebig's Annalen, cv. 286–292 (Heft iii. issued 27th Maerz 1858)Google Scholar.

^{page 228 note †} Ibid., cii. 12.

^{page 228 note ‡} xlvi. 1107–1110.

^{page 228 note §} Bull. Acad. Roy. Belg. (2), x. 337–350.

^{page 228 note ║} cxvii. 145–164.

^{page 229 note *} Compare Liebig's Annalen, oxvii. 148, Anm.

^{page 229 note †} Ibid., cxv. 157–206.

^{page 230 note *} Annales de chim. et de phys. (1852) [3], xxxvi. 102–107Google Scholar.

^{page 232 note *} Compare Bd. i., Seite 164, Anm.

^{page 233 note *} Liebig's Annalen, cxxix. 11 (Heft i., issued 8th Jan. 1864)Google Scholar.

^{page 233 note †} Ibid., cxliii. 194 (Heft ii., issued 20th July 1867).

^{page 233 note ‡} Annales de chim. et de phys. (1877) [5], xi. 304Google Scholar.

^{page 233 note §} Berl. Ber. (1877), x. 954Google Scholar.

^{page 233 note ║} Ibid. (1880), xiii. 465.

^{page 234 note *} Liebig's Annalen, ccxxviii. 308–321 (Heft, iii., issued 18th May 1885)Google Scholar.

^{page 235 note *} Comptes rendus, t. xlv. pp. 230–232 (10 aout 1857)Google Scholar.

^{page 237 note *} Comptes rendus, t. xlvi. pp. 1157–1160 (14 juin 1858)Google Scholar.

^{page 238 note *} This “O” is omitted in error in the original.

^{page 239 note *} Misprinted “C²” for “O²” in the original.

^{page 240 note *} Phil. Mag., vol. xvi., 4th series (1858), pp. 104–116Google Scholar.

^{page 241 note *} Annales de chimie et de physique, [3], t. liii. (1858), pp. 469–489Google Scholar.

^{page 249 note *} Misprinted “l'hydrogène” in the original. See the English paper.

^{page 250 note *} Misprinted “C²“in the original. See the French paper.

^{page 252 note *} Misprinted “mM”in the original.

^{page 254 note *} The vertical dotted line between these two “C²'s”is omitted in the original.

^{page 255 note *} The two upper “O's”have been omitted in the original. See the English paper.

^{page 257 note *} Misprinted “Le propylglycol”in the original.

^{page 258 note *} The vertical dotted lines between the two “C's” is omitted in the original.

^{page 261 note *} Misprinted in the original. See p. 260 and also p. 2–39

^{page 262 note *} This “OH”is omitted in the original.

^{page 262 note †} The oblique dotted line here is omitted in the original.

^{page 262 note ‡} The vertical dotted line between the “C's” is omitted in the original.

^{page 263 note *} 263 * This “OH”is omitted in the original.

^{page 263 note ‡} Misprinted “H”for “O—OH”in the original.

^{page 264 note *} A horizontal dotted line is erroneously printed here in the original.

^{page 266 note *} Comptes rendus, xlvi., 1107–1110, séance du lundi, 7 juin 1858Google Scholar.

^{page 266 note †} Misprinted in original “1,38”for “1,58”. Compare the English text.

^{page 267 note *} The Edinburgh New Philosophical Journal. New series, vol. viii., July to October 1858, 213–217Google Scholar.

^{page 269 note *} Phil. Mag., August 1858Google Scholar.

^{page 269 note †} Couper gives here the equation representing the action of PCl₅ on salicylic acid (of which he speaks a few lines further on) instead of that for the action on gaultheria oil.

^{page 269 note ‡} Comptes rendus, xxxviii. 34.

^{page 269 note §} Annales de chim. et de phys. [3], xxxvi. 102.

^{page 269 note ║} Couper is mistaken in this. Chiozza certainly had in his hands chlorobenzoyi chloride and chlorobenzoic acid.

^{page 272 note *} Comptes rendus, t. xxxviii. p. 34.

^{page 272 note †} Annales de Chimie et de Physique (3^e série), t. xxxvi. p. 102.

^{page 272 note ‡} Comptes rendus, t. xxxix

^{page 273 note *} Couper has here for phosphorus the symbol “Ph'” as throughout the French paper. Elsewhere in English he uses “P”.