430 SPECIAL RESULTS IN THE TJRANOLOGICAL 



tember, 4*7 ; October, 4*5 ; November, 5*3; Decem- 

 ber, 4-0. 



In periodical falls of meteors we may expect, on the 

 average, from 13 to 15 in each hour. !For a single period, 

 that of August, the stream of St. Lawrence, we find on 

 the mean of from 3 to 8 years of observation, the following 

 gradual increase of numbers from the ordinary sporadical, 

 to the extraordinary periodical, phenomenon : 



Time. 



6th August 



7th 



8th 



9th 



10th 



llth 

 12th 



August of the last year, 1851, (a single year therefore) 

 gave per hour, notwithstanding the bright moonlight, 



7th August '.... 3 meteors. 



8th 8 



9th 16 



10th 18 



Hth 3 



12th -\''.H;.- .... ] meteor. 



