Show FORCED TO WORK won Japanese Scientist Conceives Idea of Teaching Bivalves to Produce Produce Pro Pro- duce Pearls The Japanese conduct great oyster farms where the time bivalves are ure taught to make pearls It was Doctor noto a well-known well scientist who wio conceived the idea that oysters might be educated an and 1 made to work worl for man After many years of costly expert expert- r notation he lie discovered 1 the method In use to today ay Time The farm has an on area of ot about 00 GO o square miles and the water varies In ID depth from 5 G to 15 fathoms Time The farmer farm farm- er selects the spots where the larvae of o oysters are most numerous and ancl then he plants small rocks and stones These ar are soon covered with o oyster oyster- ster spat They TIley are then removed and placed in special be beds where they timey lie ile undisturbed until the third year It Is said that tha t an oyster will not produce pro pro- duco duce a pearl unless it be irritated by some foreign substance As soon as It feels this it proceeds to cover it with nacre nacre layer ayer on layer until after a few years rears It has made a pearl perl When large enough the oysters art taken from beds an and 1 carefully op op-ed op d 1 a tiny peck of some foreign substance Is Js In Introduced Introduced introduced In- In Into their b bodies and they tire are replaced In the sea Sen By the end of from rom three to five years the o oyster ster has coated the foreign substance with nacre an and 1 this has become a n penn pearl |