On Sulphuric Acid and Naphthaline.
[1826.
| 1763. | MM. Herissant and Macquer on Solution of Caoutchouc.-Mém. de l'Académie, 1763, p. 49. |
| 1768. | Macquer, Memoir on the Means of dissolving the Resin Caoutchouc, known by the name Elastic Resin of Cayenne, and making it appear with all its properties.—Mém de l'Académie. 1768. pp. 59. 908. |
| 1781. |
Berniad. Memoir on Caoutchoue. known by the name of Elastic Gum.—Journ. de Physique, xvii 265. |
| 1790 | Fourcroy on the Sap furnishing Elastic Gum.—Ann. de Chip. xi. 225; again, Connaissances Chimiques, viii. 36. |
| 1791 | Grossart on the Means of making Instruments of Gum Elastic, with the Bottles obtained from Brazil.—Ann. de Chim. xi. 143. |
| 1791 | Fabbroni on Solution of Caoutchouc in repeatedly-rectified Petsolanm.—Ann. de Chim. xi. 195; xii 156. Pelletier on Solution of Elastic Gum in Sulphuric Ether.—Mém, de l'Institut, i. 56. |
| 1801 | Howison on the Elastic Gum Vine of Prince of Wales's Island, and of Experiments made on the Milky Juice which it produces, with flints respecting the useful Purposes to which it may be applied.—Asiatic Researches, v. 157. |
| 1801 | Roxburg, Dr., Botanical Description of Urceola Elaslica, or Caoutchouc Vine of Sumatra and Pulo-Penang, with an Account of the Properties of its inspissated Juice, compared with those of the American Caoutchouc.—Asiatic Researches, v. 167. |
| 1803 | Gough, Description of a Property of Caoutchouc or Indian Rubber, with Reflections on the Cause of the Elasticity of this Substance.—Manchester Memoirs, N. S. i. 288. |
| 1805 | Simple Method of making Tubes of Elastic Gum Caoutchouc, avoiding the expense of Ether.—Phil. Mag. xxii. 340. |
| 1807 | Murray's Chemistry, iv. 177. contains a compendium of what was then known respecting this substance. |
Royal Institution, January 1826.
On the Mutual Action of Sulphuric Acid and Naphthaline[1],
[Read February 16, 1826.]
In a paper "On new Compounds of Carbon and Hydrogen," lately honoured by the Royal Society with a place in the Philosophical Transactions, I had occasion briefly to notice the peculiar action exerted on certain of those compounds by sulphuric acid[2]. During my attempts to ascertain more minutely
