No. Grab an extension like HN Special or RES if you want the functionality.
Infiniscroll is an evil creation, made worse by developers who insist on creating a footer at the end of the scroll view, just out of reach so that you can never quite get to it.
I don't even know how to get a second page of HN results. Never had the need. Infinite scrolling creates a daunting never-ending feeling. I like the sense of accomplishment after scanning/reading through a fixed list of results. Infinite scrolling makes that carrot forever out of reach.
It intelligently remembers where you were if you click a link and then back; it restores your previous scroll location. Pleasantly surprised by the behaviour as I usually do not enjoy infinite scroll.