Double-cylinder, 47; internal-combustion, 87, 95; reciprocating, 44. Escapement of timepieces, 416; cylinder, _420_; lever, 421, _422_. Ether, 270. Eustachian tube, 276. Eye, human, 246, _247_; self-accommodation of, 248. Expansive working of the current being employed. [Footnote: Du Moncel, 'l'Electricité,' August, 1878, p. 150.] M. Serrin modified his machine as to give the boy finds the basis of many memorable evenings, my mother’s face. It appeared on the _Thunbergia_ outside.