What I also find interesting on that map is that Heath Street continues from Yonge Street right on over to Bayview. It's broken by the ravine now, and it's pretty steep. It continues on as Clarence Ave, past Welland and the Belt Line railway. Mt. Pleasant isn't even there (South of Merton). And they called it the "Provincial Lunatic Asylum", right by the Central Prison in Liberty Village. Railways went from the Beach, over to the island via the Eastern Gap (what we currently call it), over to where the Billy Bishop Airport is, then back to the City.