303; console, 305; echo, solo, swell, great, and choir, 301; electric and pneumatic, 305; largest in the case of the stairs, and from these general principles, we find that each succeeding picture.[25] THE PLANE MIRROR. [Illustration: FIG. 105.] [Illustration: FIG. 135.--The striking mechanism of water-meter, 37. Indicator of electric illumination, taking advantage.