Texas gunpowder.
--The Houston (Texas) Telegraph learns that an effort is being made in Burnet to manufacture gunpowder, and that it is likely to prove successful. A cave was discovered, not long since, in Burnet county, which was said to contain saltpetre in an almost pure state. A. Mr. Foster, of Burnet, visited the cave, taking with him a few pots, and in about two weeks he returned with 150 pounds of pure saltpetre. He at once set about the manufacture of powder, and we are promised a specimen of the result.
