Show violet rays detect seeds violet rays are now used to protect the american farmer but the rays arp are used on grass seeds not tha farmer the rays use used in an almost uncanny test mike make italian ry ryegrass egrass grass sometimes sold as english ry egrass reveal its true identity when the seeds are germinated on filter paper and put in a darl darkened darleene zene d chamber and the short rays played upon them the paper on which the roots of the italian variety ile he at once betray the seed by giving off a distinct ghostlike glow even more mystifying the apparently iden tacal seeds of the english variety when tested side by aide alde with the ital tan lan fall to react some seeds of the two varieties are otherwise indistinguishable gui guis bable but the english variety us bally brings a higher price the discovery that short rays would make the filter paper fluoresce nuo on which the th roots of certain plants grow was made in germ germany any and the department of agriculture has adopted it to protect american farmers in buying seed |