Vicksburg, Miss., April 13.- The steamer Lake Falmyra has arrived with two barges, boat and barges loaded with refugees and their stock from Sunfiower rlver. The people coming out are mostly the families of plantere, only a few negroes being on board. The boat returned to that section loaded with supplies. Her passengers report a very bad state of affairs there, but nothing like what had been apprehended, there being no loss of life. The people have looked after themselves in true overflow style, getting on rafts in some instances, and into the glns in others. There is great loss oí cattle, however. Old planters say the present overflow is the worst they have ever known, and there is much depression on account of the fear that it vvill be ij-npossible to make a erop in this section.