Pearl fishing has been attempted on the coast of German East Africa at Zanzibar Island and south, between the Island of Mafia and the main coast. Mother-of-pearl is abundant but few pearls have been found and there has been no sustained effort. There are large coral banks about the islands of the coast favorable for the growth of mother-of-pearl and there is shallow water over large areas. Good white pearls have been taken from a red mussel found there. South of the Island of Mafia are beds of large pinna shells which yield black seed-pearls. There are pearl-shell fisheries in the Merguian Archipelago and in the government of Burmah and some pearls are found. The banks, scattered over an area of eleven thousand square miles, are rented from the government and rights to fish are sublet on royalty. The fishing is nearly all done by helmeted divers. Avicula and meleagrina margaritifera are taken off the west coast of New Caledonia. From the former large numbers of pearls are taken, and from the latter, very beautiful white pearls. Fine colored pearls pink, yellow, gray and black are often found in this district. A variety of oyster commonly called shoulder of mutton, and another shell-fish called jamboneau (pinna) of which the pearl is very fine, are also found in these waters. A syndicate was formed in Paris to exploit these beds and obtained concessions covering one hundred and thirty miles. Owing to the difficulty of getting divers, the waters had not been exploited to any great depth up to 1898, the regular fishings being confined to the shallows of six to seven feet, though larger shells were known to be in deeper water. More systematic work with modern appliances and in deeper waters has since been done with good success, but late reports show an accumulation of shell and indications that the industry has not been profitable. In 1904 the price of shell (black-edge mother-of-pearl) fell to $250, U. S. gold per ton of 2240 pounds, from $700, the former price, with six hundred tons stored in London, Paris, Berlin, New York and San Francisco, making a prospective loss of $270,000 for 1904. There was an attempt to limit the production by a return to native diving. With dress the output would be about 500 tons for the year, with naked-diving 200 tons less. This would operate against the local government, as it not only levies $38.60 U.S. gold per metric ton as an export duty, but makes a large profit on the diving machines by way of license. The pearl fisheries of French Oceanica therefore face a grave situation. Pearls are found occasionally on the western coast of Nicaragua at San Juan del Norte. The Panama coast still yields great quantities of pearls as it has done for many years. When Spain controlled the northwestern section of South America with the Isthmus to the borders of Guatemala, under the name of Colombia, immense quantities of pearls were sent home by the colonists.