I was reading a book and came across this clause.
“For my part I appreciated the time they had given me, and felt happy just to be in a place as attractive and atmospheric as Cambridge.”
My question is about this comma. Why is this comma before the conjunction and? We don’t have a subject in the second clause, although it’s implicite that it’s I. The first part of the sentence is an independent clause. The second part is a dependent clause(?). Is the the use of this comma correct?
I’d appreciate your help.