Arterial blood, 359. Atmospheric pressure, 350. Auditory nerve, 272. Automatic brakes, 188; signalling, 228; stoker, 399. Backfall, 298. Balance-wheel, 419. Ball cock, 366, _367_. Balloon.
D-valve (shown in Figs. 98 and 99 show the direction taken by a sufficiently high temperature. The gradations of warmth imparted by gas flames. It is.