John Samuel Pitchford Profile Topics Started Replies Created Engagements Favourites Search topics: Topics Engaged In Viewing topic 1 (of 1 total) Topic Voices Posts Last Post Attempt to determine the distance, the speed and the path of the shooting stars from J.F. Benzenberg and H.W. Branders Started by: John Samuel Pitchford in: History 1 1 4 years, 2 months ago John Samuel Pitchford Viewing topic 1 (of 1 total)