After receiving the approval of Miss Hudson, landlady of 221B Baker Street, John H. Watson, recently returned from the Afghan War, becomes the housemate of consulting detective Sherlock Holmes, who himself is soon implicated in a serious crime.
The tincture of guaiac method,
which is similar to this,
،مستخلص غاياك هذا، والذي يشبهه
Die ähnliche Methode mit Guajak ist nicht
nur ungenau, sondern kostet auch
Ça surpasse le test au gaïac
qui est compliqué, peu fiable
O método guaiaco, que é similar,
Есть ещё метод с гваяколовой смолой,
 но он трудозатратен, ненадёжен