[30] See Edinburgh Journal of Science, No. xi., p. 153, and No. xiii., p. 51.

[31] Iliad, lib. xviii., 373-378.

[32] Annales Loisiliani, anno 807.

[33] A popular account of this engine will be found in Mr. Babbage’s interesting volume On the Economy of Manufactures, lately published.

[34] See Edinburgh Journal of Science, New Series, No. viii. p. 274.

[35] Acta Medica et Philosophica Hafniensia, 1673.

[36] See Forster’s Travels, and Kinneir’s Geog. Memoir.

[37] Edinburgh Journal of Science, No. xv., p. 183.

[38] Edinburgh Journal of Science, No. xv., p. 183.

[39] Edinburgh Journal of Science, No. 1, New Series, p. 71-75.