The following snmmary of European news is from the N. Y. World, of the 2d inst.: Jiv the nrrival of the Europa we have three dayfl liiter news from Eu rope. Muximilian and wifè Ie ft Mini mar on lh 14ih of April for Rome en route for Mexico. The new Kmperor roes to Rome to obtain the Pope's blessing. The Fl rida was in a Spanish port, haviog been refused coal at a Portugese port. It is stated that the Viceroy of Egypt has deulared that he ordered the building ol thé Liürd rms. The eiege of Dnppel eontinued vigoronsly. The Dimes havo bluckaded Dantzie and Pillan. The differences between Franoe, England and Rucsia, have been reeonciled. The Swiss gov ernment is ubont to enforce a decree of expuli-ion against Uazzini in uonse quenco of his connection wilb the connpiracv to assnssinate Napoleon. Garibaldi had a grand reception inthecrys tal palace at London. The new opera house, now building in Paris, will be largest building of its charaeter in the world. It will cost about five mülion dollars. All mail communieationa with the Army of the Potomae and the troops i probib:ted for tlieprcsect.