Show A the romana did anyone who bus made a trip to sea has bag seen been the ingenious lugt klouk propeller 8 appliance which to la thrown overboard at the end ol of a long cord and by oceans of 0 which the officers set get an approximate idea of 0 their speed this thin la in not a new idea for in ancient lines the bo romans had a similar appliance for ascertaining their rote rate of progress at spa bea they dragged little piddle paddle wheels bi hind ships the revolutions or of which enabled them to estimate the distance otance dl which the ship had bad traveled |