Meteorological observations and essays / By John Dalton.

  • John Dalton
Date:
1834
Catalogue details

Licence: Public Domain Mark

Credit: Meteorological observations and essays / By John Dalton. Source: Wellcome Collection.

    79/280 (page 53)
    SECTION TENTH. Account of the Aurore Boreales seen at Kendal and Keswick. Tue Aurora Borealis, or that phenomenon which in England is called the Northern lights, or streamers, has appeared frequently to all the northern parts of Europe since the year 1716, though it seems to have been a rare phenomenon before that time. Sometimes the appearance is that of a large, still, luminous arch, or zone, resting upon the northern horizon, with a. fog at the bottom mat other times, flashes, or coruscations, are seen over a great part of the hemisphere.-—We shall describe the general phenomena more at large in the essay on the subject, in the second part of this book ; and particular observations will be given at large in the addenda to this section. Lxplanation of the following List. In the first column we have given the month and day on which the aurora was seen; in the second, the hour P. M.; when no hour is mentioned, it is to be understood to have happened between the end of the twilight and ten o’clock. The third column con- tains the moon’s age at the time, or the number of complete days betwixt the change and the aurora ; the fourth contains the days in like manner betwixt the Full and the aurora; the reasons for these two columns will appear in the Essay. In the fifth column we