The text doesn't use an `f`. If you copy from e.g. the 1700 passage you get `ſ` not `f`.
document.body.style.fontFamily = "Baskerville";
Baskerville has a nice long-s. TNR is also not bad. Garamond is passable.
on edit: liked the Garamond better, since the font is a bit thicker, checked it on "ſpake" and was obviously a long S whereas on the thinner Baskerville still looked like an f to me. Although the original text was perhaps too thick for me.