Show POLICE UNCOVER NEW Spy TRAILS French Oper Operatives Hold 16 Prisoners Suspected of of Widespread Espionage PARIS March Mardi 21 French 2 French secret se cret ct police were were- hot on new trails Wednesday y in th their ir investigation of what authorities call the py ring ir in history a history a ring they saYer sayer- fer ferreted out naval and military secrets of the United States England and France Trance Fresh angles were uncovered in the examination of documents seIzed Tu Tuesday day when six persons were were arrested arrested ar ar- ar rested as a a result authorities said o of r revelations d drawn aw Irom the two American prisoners Robert Switz and his h s wife Marjorie Police Pollee said more more arrests are In prospect prospect perhaps as S many as 25 However In d athe the utmost utmos secrecy reg regarding Ui those sc sus zus Including AmeriCan cou Cou ou- ou pic plc 16 are arc in jail jan While working In the interests In in- of ot Soviet R Russia and IG Germany Ger r. r many police b Believed Wednesday the ring may also alo have dealt with other powers They predicted art an espionage pion age network would be found spread pread in many countries In the raids secret codes photographic photo graphic plates and films along with the mountain of documents ts were seized in the rooms of ot the new pris ps-is- Many of ot the papers were said Eaid b by police to deal with plans to protect France against gas attacks and to mobilize industry for unified effort eort in time of ot war BERLIN March 21 UP UP-A UP A news new agency dispatch from Prague CzechoSlovakia Czechoslovakia Czecho Czecho- slovakia Wednesday y said a highly organized band of ot 25 spies posing as immigrants had been arrested The dispatch reported the chief o othe ot of the band was a Dr anc and that its activities were in behalf o ofa ot of ota a northern neighbor |