Show OYSTERS FORCED TO WORK Japanese Scientist Conceives Idea 01 Teaching Bivalves to Produce Pro duce Pearls The Japanese conduct great oyster farms where the bivalves are taught to make pearls It was Doctor noto a well known scientist wh who conceived the idea that oysters might be educated and made to work for man After many years of costly experImentation experimentation experimentation he discovered the method lause hruse la- la use today The farm has an area of about CO GO square miles and the water varies In depth from 5 to 15 fathoms The farmer farm er selects the spots where the larvae of oysters are most numerous and then he plants small rocks and stones These are soon covered with oyster- oyster spat They are then removed and and- placed in special beds where they lie 11 undisturbed until the third year It Is said that an oyster will not produce produce produce pro pro- duce a pearl unless It be irritated by some foreign substance As soon as ns It feels this It proceeds to cover it with nacre layer on layer until after a few years It has made a pearl When large enough the oysters are taken from their beds and carefully opened a tiny speck of some foreign substance is Introduced introduced introduced in In- into their bodies and they they- are replaced In the sea By the end of or from three to five years the oyster has coated the foreign substance with nacre and this has become a pearl |