hich after a time he was able to identify,by reason of certain peculiarities in the ticking, asthat of the electrical timepiece at Cambridge Univers-ity, the ground wire of which penetrated, the earth ata point more than half a mile distant. Some five years later Prof. Bell made rather ex-tensive… … PASSENGER ON VESSEL COMMUNICATING WITl.LAND. STUBBLEFIELD APPARATUS. mitted by the use of a buzzer could be heard dis-tinctly four miles distant, but little success was at-tained in the matter of communicating the sound ofthe human voice. Meanwhile Sir William Preece, ofEngland, had undertaken…
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