Ã¼i.migronts, it is said, are flowing into Ihb country Trom all paris of ihe Union, and frorn Europe. One ihousand Germans arrived at Gnlveston, on the 25th u!r. Wecopy the folWing extract of a letler from a gentleman in Texas to a friend in Washington, Del., dated Dec. 7, 1815: "Dear Sir: - Our country is going ahead with tremendous strides; what think you of nvo tliousand souls orriving in Tcxas in ono week, maiiy of which are ))lanters, the balance mostly of the workinjgclÃ¡ss. A Mr. Mercer, a friend of mine wlio resides on OÃd Caney, informed me a few days since, thal he vvopld pack 3J hhdÃ¡. of while sugar ol 1000 Ibe. eaeh, from an acre of cane. Thisquality sells for $8 percwt. which will amount to 240 for a single acre of ground, for one year."