From the book:
On the heights overlooking the harbor of Mogador, a seaport on the west coast of Morocco, the missionary, in the coolness of the late afternoon, is following the precept of Voltaire by cultivating his garden. He is an elderly Scotchman, spiritually a little weatherbeaten, as having to navigate his creed in strange waters crowded with other craft but still a convinced son of the Free Church and the North African Mission, with a faithful brown eye, and a peaceful soul. Physically a wiry small-knit man, well tanned, clean shaven, with delicate resolute features and a twinkle of mild humor. He wears the sun helmet and pagri, the neutral-tinted spectacles, and the white canvas Spanish sand shoes of the modern Scotch missionary: but instead of a cheap tourist's suit from Glasgow, a grey flannel shirt with white collar, a green sailor knot tie with a cheap pin in it, he wears a suit of clean white linen, acceptable in color, if not in cut, to the Moorish mind.