[1] A short account of this discovery has been given in Dr. Beddoes’s Notice of some Observations made at the Pneumatic Institution, and in Mr. Nicholson’s Phil. Journal for May and December 1799.
[2] Cavendish, Priestley, Black, Lavoisier, Scheele, Kirwan, Guyton, Berthollet, &c.
[3] Phil. Trans. v. 78, p. 270.
[4] Phil. Trans. v. 75 p. 381.
[5] Elem. Kerr’s Trans. page 76, and 216, and Mem. des Sav. Etrang. tom. 7, page 629.
[6] Ingenhouz sur les Vegetaux, pag. 205. De la Metherie. Essai sur differens Airs, pag. 252.
[7] Annales de Chimie, tome 28, p. 168.
[8] Experiments and Observations, Vol. iii. last edition, page 105, &c.
[9] When copper is dissolved in dilute nitrous acid, certain quantities of nitrogene are generally produced, likewise the nitrous gas carries off in solution some nitrous acid.
[10] This airholder, considered as a pneumatic instrument, is of greater importance, and capable of a more extensive application than any other. It was invented by Mr. W. Clayfield, and in its form is analogous to Mr. Watt’s hydraulic bellows, consisting of a glass bell playing under the pressure of the atmosphere, in a space between two cylinders filled with mercury. A particular account of it will be given in the [appendix].