PREPOSITIONS. By == "as a consequence of"By ("near," "following close after," hence "as a consequence of").
“The bishop of York,
Fell Warwick's brother, and, by that, our foe.
“Lest, by a multitude
The new-heal'd wound of malice should break out.
“So the remembrance of my former love
Is by a newer object quite forgotten.
Hence sometimes it seems to be (but is not) used instrumentally with adjectives which appear to be (but are not) used as passive verbs. By does not mean "by means of," but "as a consequence of," in
“Fear'd by their breed and famous by their birth.
“An eagle sharp by fast.
“Oh how much more does beauty beauteous seem
By that sweet ornament which truth doth give.
“Laer. Where is my father?
Queen. But not by him.