| Show SOUND or OF BELLS the near rieann r bells are hung bung to the surface of the tho earthy earth parth other things being equal the farther they pan fan beveard be heard franklin has remarked that many year years s ago the of philadelphia had bad a bell imported from england in order to judge of the sound sounds it was elevated on a triangle in the great street of that city and struck as it happened ow on a indries market day when the people coming to mark market et yvener on hearing the sound of 0 a bell bel I 1 at a greater distance from the city than they ever even heard any bell before this circumstance e excited the attention of the curious and it was discovered that the sound ot of a bell struck in the street reached nearly double the distance it did when raised la pie fhe air in the air sound traveled at the rate of from 1130 to 1140 feet pei per second in water 40 teet feet per second sounds are distinct at twice the distance on the water that tha they are on land |
