r does not speak. but communicates with it by the passage, C, in which is a pressure on a key, instead of acting directly upon the valve If our friends would bear in mind what we so often repeat, double valve, D, similar to valve, E, in the preceding dia- of the pipe to be sounded, opens a valve… … like ourselves, believe in the advancement of the country's precisely the case, so that the organist has no power to exert gram. When the upper part of valve, D, is raised and its beyond the very light pressure necessary to so move the keys. prosperity through the diffusion of useful knowledge,…
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