"My guide uttered a few words, on which all the persons seated rose, and with that peculiar mildness of look and manner which I have before noticed, and which is, in truth, the common attribute of this formidable race, they saluted me according to their fashion, which consists in laying the right hand very gently on the head and uttering a soft sibilant monosyllable—S.Si, equivalent to “Welcome.” (Chapter V)"