Latest Developments In European Crisis Sept 28 38. LONDON Czechoslovakia rejects Hitlers terms for union of Sudetenland with Germany, authoritative source declares; Hitler demands part of Sudeten German region be handed over undamaged by October 1 with plebiscite in other districts before November 25; French premier, foreign minister fly to London for momentous conference; cabinet holds three meetings. PARIS Cabinet speeds Daladier, Bonnet to London with unanimous vote declaring Hitlers terms unacceptable without guarantees for new Czechoslovak frontier; reservists continue to move into positions under partial mobilization; plans announced for evacuation and air raid defense of Paris. BERLIN Hitler to speak Monday night; troops pour through German Austria toward Czechoslovak frontier; refugees continue to stream across border from Czechoslovakia. VICENZA Mussolini threatens to take military measures if other nations continue to mass armies, concentrate ships. PRAGUE Authorities announce army ready for any emergency. SCHINDING Czechoslovak shock troops man first line of defense along entire Czechoslovak German frontier. ASCH Sudeten German forces advance within three fourths of a mile of Czechoslovak army posts. GENEVA Soviet Commissar Maxim Litvinoff notifies British that Russia will appeal to league if London tries to make Prague submit to any further concessions to Hitler. SEIDENBERG German officials estimate 170,000 refugees have arrived from Czechoslovakia. WARSAW Czechoslovakia consents in principle to discussion of Polands demands for Polish inhabited areas, Polish telegraph agency reports; Czechoslovaks, Poles clash along border. Under.