gh a and not to be found in every institution of learning. concave reflector is illustrated. The reflector, A, is ad- hole in which the food and water were passed to Mes- To perform most of the experiments possible with con- justed to the trumpet, B, by means of the light of a senger as if he were… … showing that, of the three metals, copper is the best Fig. 1—REFLECTION OF LIGHT AND SOUND. conductor of heat and iron the poorest. lamps answer exceedingly well. The projection of im- EASILY MADE TREVELYAN ROCKER. well remembered whistle. The horse raced around the This apparatus consists of a…
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