In Emerson's From Education metaphor "The college was to be the nurse and home of genius." There are two metaphors, explain both. I just need a...

I think you
can extrapolate a lot of metaphors from "nurse." Two that I believe Emerson was going
for are "to nurture" and "provide sustenance or entice."  Emerson may have
been describing schools mostly for boys with male teachers, so he could be expressing the need
for a feminine touch to teaching.  In any case, I think this line implies Emerson's plea for the
need of a motherly affection between teacher and student. 

 "Nursing" connotes different things: nursing back to health, providing sustenance
(breast feeding) and generally taking care of someone.  "Genius" is, in this
context...