-A correspondent inqniros hethoithe assertioa made by the last Convention nel: at Ann Arbor. that Tex:s is large cnough to make 5Ã) slaveholding States of the size of Connecticut, is correct. .By Consulting the most recent Gcographics, he will find thai the present boundarifis oi Texas embrace a territory of 240.000 square miles. Conuecticut hn& but J7G0, and Massachusetts 75J0. Texas then woulcl make 50 States as a large as Connecricut, and a fraction over. or 32 as large as Massachusetts, or six as large as the pcniiisula of Michig'in. The Texan Congress, we believe, have laid claim to an extent of country considerably larger tha'n this.