KALEIDOPHON; KALEIDOPHONE n.
An instrument invented by Professor Wheatstone, consisting of a reflecting knob at the end of a vibrating rod or thin plate, for making visible, in the motion of a point of light reflected from the knob, the paths or curves corresponding with the musical notes produced by the vibrations.
MARGIN n.
o by him on behalf of his principial, as in the speculative buying and selling of stocks, wheat, etc. N. Biddle. Margin draft (Masonry), a smooth cut margin on the face of hammer-dressed ashlar, adjacent to the joints. -- Margin of a course (Arch.), that part of a course, as of slates or shingles, which is not covered…