Sift the flour, baking soda, and baking powder into a large mixing bowl. Using a wire whisk, blend in the spices and salt. Melt the butter in the boiling water and whisk mixture into the flour mixture. Add the eggs and molasses and whisk until blended.
Turn into a buttered and floured 8x8 inch baking pan. Bkae for 35-40 minutes, until; well done and a toothpick plunged in the center comes out clean.