The tortoise-shell, so often mentioned in the Periplus as an export from Menouthias (chap. xv.) and Rhapta (chap. xvii.), has until lately been neglected. Like Bombay Calabar, and our Isle of Dogs in the olden time, the few acres of Turtle Island were used to ‘keep antelopes, goats, and other beasts of delight,’ while vicious baboons were deported to it from the city. Below it is the celebrated ‘Harpshell Bank,’ now mercilessly spoiled. Southernmost is Chumbi Island, alias La Passe, which, mistaken for the Turtle, has caused, many a wreck. These mishaps are not always accidental. One day Lieut.-Colonel Hamerton saw, through his glass, the master of a Frenchman deliberately stow himself and his luggage in the gig, put off, and leave his ship to run her nose upon the nearest reef. These islands form the well-known ‘Passes,’ channels intricate with lithodom-reefs and mollusk-beds. They number four, namely, the northern or English Pass, between Champáni and Zanzibar; the N. W. or French Pass, between Kibondiko and Changu; the great or middle, between Changu and Báwi; and the western, south of Báwi. The principal entrance was buoyed by the late Sayyid, but these precautions soon disappeared. Within the line of break-waters is the anchorage, which may be pronounced excellent; ships ride close to shore in 7 to 8 fathoms, and the area between the islets and the island may be set down at 3·8 square miles. It presents an animated scene. Mosquito fleets of ‘ngaráwa’ or monoxyles cut the wavelets like flying proas, under the nice conduct of the sable fishermen, who take advantage of the calm weather. The northerners from about Brava have retained the broad-brimmed straw hat, big as an average parasol. Like that of Malabar, Morocco, and West Africa, it was adopted by their Portuguese conquerors. The machua or ‘little boats’ of the Lusiads, which De Barros calls ‘Sambucos,’[19] are still the same, except that a disproportioned sail of merkani (American domestics), based upon a pair of outriggers, now supplies the primitive propeller, ‘d’humas folhas de palma bem tecidas.’ The outrigger is rarely neglected. Here and there a giant shark shoots up from the depths, and stares at the fishermen with a cruel, fixed, and colourless eye, that makes his blood run cold. Only the poorest of poor devils will venture into a ‘dug-out,’ which is driven before the wind or paddled with a broad, curved, spoon-like blade. These Matumbi, or hollowed logs, form a curious national contrast with the launches and lighters that land European merchandise; ponderous and solid squares, their build shows nothing graceful or picturesque.