[HH] An account of this stone is given by Dr. Halley in the Philosophical Trans. No. 341. And also there is an account of it by Montenari. [II] Essai de Physique, Tom. II. sect. 1557. [JJ] All these facts are to be found mentioned in Chladni's book; first at p. 8, and then from p. 34 to 37. [KK] See the full account in the Philosophical Transactions, Vol. LI. for 1759, p. 218, &c. [LL] This is according to the account sent by the Rev. Mr. Michell, Fellow of Queen's College, Cambridge, p. 223. [MM] Ib. p. 237, 265, 269. [NN] Ib. p. 265. [OO] Ib. p. 272. [PP] Psalm III. v. 2 and 4.