366 Astronomical and Nautical Collections. 



S 



The morning of the 8th of May was cloudy, and indicated rain, 

 quite contrary to what might have been expected from the clear- 

 ness of the preceding evening. 



N. B. On the evening of the 8th, we had a great deal of thunder 

 and lightning. 



Note by Dr. Young. There is every reason to suppose that 

 these parhelia must in reality have been only fragments of coronse, 

 formed by the diffraction of a cloud rising but little above the 

 horizon: the absence of colours may easily have depended on the 

 absorption of all the light, except the red, in its long passage 

 through a hazy atmosphere. I have seen a rainbow at sunrise, 

 or rather a little before sunrise, in which no other colour whatever 

 but red was perceptible. 



vi. Error inT ay LOn's Log a riths. 

 Cosine of 37° 29' 2", for 5503, read 5603. H. J. 



