Show II Pearls Gathered in inMany inMany Many Parts of World I The pearl Is a globular concretion found In the shells of ot certain bivalve highly valued for ornamental ornamental ornamental orna- orna mental purposes and classed among gems The principal sources of pearls air are the pearl pear oster oyster found throughout through through- out the Pacific ocean the pearl mussel mussel mus- mus sel and the freshwater mussel The he chief pearl fisheries are those of ot Ceylon Cey Cey- lon on carried on principally In the Gulf Gult of Mannar Those of the Persian gulf were known to the ancients Pearls are arc also obtained from the Sulu archipelago arch arch- northeastern Borneo New Guinea Gulf Guf of Mexico and Australia Native d divers ers descend descend CO or 70 feet weighted by a stone and lowered from froma j a u boat bout by a rope They carry a net and gather the pearl oysters In It They They hey remain below helow for 30 or 40 sec- sec seconds ponds at a n time and ar are hoisted to 10 the I I 1 surface after signaling with a rope i The he oysters are allowed to rot on the tile benc In the suns sun's rays Then In ID seven se or ten du days s 's the decayed oysters are searched for pearls Artificial pearls are ale largely made mlle In France Germany and ond Italy by blowing blow blow- ing ang a n thin globe of glass an and filling It with a solution of ammonia and fish J scales I |