Note 171 — Chapter III

Also Sonrhay, gh and rh being interchangeable throughout North Africa; Ghat and Rhat, Ghadames and Rhadames, etc. In the mouth of an Arab the sound is that of the guttural ghain, which is pronounced by the Berbers and Negroes somewhat like the Northumberland burr, hence usually transliterated by rh in non-Semitic words.