The descent of the African night is never forgotten. There is nothing more complete than to rest by a fire on a canvas seat, with tobacco and a drink, as the sky grows dark blue and the stars sharpen with the clarity peculiar to Africa, until the rim of the firelight seems surrounded by a second outer world alive with the night sounds of a low panting grunt of a lion, the sudden hooves as zebra or antelope flee, the menacing cough of a leopard defending its kill from a hyena.