Boylston station had service from Tremont Street Subway.
The Great Comet of 1819 , officially designated as C / 1819 N1 , also known as Comet Tralles , was an easily visible brilliant comet , approaching an apparent magnitude of 1 -- 2 , discovered July 1 , 1819 by Johann Georg Tralles in Berlin , Germany .. Johann Georg Tralles. Johann Georg Tralles. brilliant comet. Great comet. apparent magnitude. apparent magnitude. It was the first comet analyzed using polarimetry , by Francois Arago .. polarimetry. polarimetry. Francois Arago. Francois Arago