The "Translator's Preface" (page 8) has many instances where the letter 's' is replaced with something that looks like lowercase 'f', except where 's' is the last letter of the word.

This makes reading the text extremely difficult and infuriating. Consider 'fubject' instead of 'subject', and 'whofe' instead of 'whose'. It's like I suddenly developed a lisp or something.

Just curious why the printer of that book may have used this typeface.