Show FURTHER USE FOR RAYS X enable observers observer to detect presence Pre of pearls in oysters Oya tere at a time when considerable attention Is being paid to the pearl industry ot of ceylon and the government Is taking extensive measures to protect the oyster fisheries there it Is ol of interest to record a discovery recently commini communicated c abed to the paris ace academy demy of sciences by M dubols dubois relative to using the roentgen rays to examine the oysters it has been found that these rays enable an observer to determine at once whether a aking oyster contains a pearl or not without injury to the animal and in case the pearl Is small the oyster may be replaced in the bed until further growth takes place and the desired size Is reached in tho the scientific examination of 0 the pearl oysters in ceylon it has been ascertained that the popular belief bejet that the nuclei of pearls are arc formed by minute grains of sand or other particles holdi good to in but few instances aed all itta it ta iii clr cag abc pearls or pearly excrescences are produced by the irritation of boring sponges and burrowe burrowing n g worms the best germs result from the stimulation of it a parasitic worm which becomes incased encased and dies harpers weekly |