NO. 



i7.] 



OBSERVATIONS. 



107 



' m. horiz. "^ Thick bank all along the boriz. ^ Bank of cloud over the eastern sky. * A bank came 

 rolling up over the sky, quite even and thick, and sharply defined. In the course of a few minutes, the upper 

 margin of the bank advanced about 5 or 6 ° up the sky. 



