Lmproveaients. Among the many improvements going forward on Main Street, we notice the commencement of the new building for the Salt Lake Billiard Booms the foundation of which gives substantial evidence of the durability dura-bility of the structure. The new building being erected by George Goddard is progressing rapidly, and will be a handsome addition to the row of stores on the east side of the street. Taylor & Cutler are adding an additional addi-tional story to their stores, which will make them three stories instead of two. This will afford this enterprising firm additional room for their business, besides adding much to the appearance of the building.