Black and White Cookies I

INGREDIENTS

• 1 cup unsalted butter
• 1 3/4 cups white sugar
• 4 eggs
• 1 cup milk
• 1/2 teaspoon vanilla extract
• 1/4 teaspoon lemon extract
• 2 1/2 cups cake flour
• 2 1/2 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon salt
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• 4 cups confectioners' sugar
• 1/3 cup boiling water
• 1 (1 ounce) square bittersweet chocolate, chopped