PREPOSITIONS. Upon used metaphorically; adverbiallyUpon is often used like on adverbially after the verb "look."
“Nay, all of you that stand and look upon.
“Why stand we like soft-hearted women here
And look upon, as if, &c.
"Near upon" is adverbial in
“Strike all that look upon with marvel, come.
“And very near upon
The duke is entering.
Upon, from meaning superposition, comes to mean "in accordance with" (like "after"):
“Indeed, my lord, it followed hard upon.
“Upon my power I may dismiss this court.