Dr. Bates was one of a very few that used round bottom bottles. This example with his Pineapple Cordial would be the other. Bates is found in the Baltimore City Directories first at 80 Centre Market Square, then Baltimore & Charles, 228 W. Baltimore and finally back at 80 Centre Market Square. He is the proprietor of tonic beer before and after 1876. This bottle may be the only bottle he used selling with the the rest sold in kegs or by the glass. Tonic Beer and water proof soles? What a combination!