1. Melt butter; cool to room temperature. Combine butter, sugar, cinnamon, nutmeg, salt and egg in a large mixing bowl; beat well at medium speed of an electric mixer.
2. Combine water and soda in a small bowl, stirring until soda dissolves; add soda mixture to creamed mixture, beating well. Stir in molasses and flour.
3. Drop dough by teaspoonfuls, 3 inches apart, onto greased cookie sheets. Bake at 350 degrees F. for 7 to 9 minutes. Cool cookies completely on wire racks.