Description | About Spots in the Sun
'There is a Solar Spot which is now making its second Revolution. I my self observ'd its former Revolution with an excellent eighteen foot Glass, and Micrometer, but you may see it plain with one of seaven or 8 . I saw it go off on Sunday May the 23rd about two a Clock afternoon : and I perceived it yesterday about the same time to have entered the Suns Disk about a days Journey. ' |