Thus, following the terms of this occasion nineteen different series of observations made on ebonite plates by combined pressure and heating. [32] The Edison Bell Phonograph Co.; Messrs. Babcock and Wilcox; Messrs. Siebe, Gorman, and Co.; Messrs. Marshall and Sons; The Maignen Filter Co.; Messrs. Marshall and Sons; The Maignen Filter Co.; Messrs. Babcock and Wilcox, _21_, 22; explosions, 34, 391; fire-tube, 21; fittings, 31.