Abstract
Several auroral displays visible in recent years have shown well‐defined coronae in the United States and Southern Canada. When streamers shoot up simultaneously from nearly every part of the horizon, they appear to meet in a rude crown of light known as the corona. Many series of observations have been made on coronae in Northern Europe, but in our latitudes aurorae are rarely of sufficient magnitude to show this feature. The recent brilliant displays have, therefore, offered Americans exceptional opportunity to observe the position of the center of the corona, or radiant of the auroral streamers.
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