168 



Auroral Observations at N'eio Haven. 



General Summary, 



Tlie following Table presents a summary of the preceding auroral obser- 

 vations, classified by months. 



The least number of auroras was observed in the month of June, viz : 

 46; and the greatest number in the month of September, viz: 97. The 

 deficiency in June may be ascribed in j^art to the influence of twilight, 

 which during that month at New Haven lasts till half past nine, while the 

 observations were not generally continued after 10 o'clock. If we classify 

 the observations by seasons Ave shall have in 



