The N. Y. Herald of Friday, publifhw a letter from Menda, the capital of YucatÃ¡n, announcing the formal vnthdrawal of that pro vince from the Government of Mexico- re called her deputies from the Mexican Congress, and torn the Mexican Eagle from her standard. This took place on the 3Oth uit. According to the intelligence conveyed in this dispatch, the province of YucatÃ¡n has absÃ¼lu tely decÃa red itfl indcpcntlcnce of Mexico, and is no w & separate republic. Incident upon this has been the Ã¯esignttion of the Governor of the departmenÃ, Don Tu hunco LÃ³pez, and bis place is fÃlied by Don Miguel Barbechan, formerlj holding tbo same office. This freshly revolted province, eays the Heraldos one of the best in tbe whole repubÃ¼e of Mexico. I tb Inbabitants are energetic and enterprising, and if they are detormincd to be independent, the rest of Mexico eannot retakO them.