First conversation by long distance underground cable, 10 miles - New York to Newark. First installation in Chicago begun. Earliest use of measured service in automatic exchanges.

• 首次通过地下电缆实现长途电话传输,从纽约到纽瓦克,全长10英里。芝加哥开始按章第一套电话系统。在自动化交换中首次使用计次制通话业务。发明浦尔生电弧无线发射机。