Sydney Barber Josiah Skertchly
... that botanist and geologist Sydney Barber Josiah Skertchly wrote a book on the manufacture of gun flints?
... that botanist and geologist <b id="mwDjo"><a href="./Sydney_Barber_Josiah_Skertchly" id="mwDjs" rel="mw:WikiLink" title="Sydney Barber Josiah Skertchly">Sydney Barber Josiah Skertchly</a></b> wrote a book on the manufacture of gun flints?