Beat egg whites until stiff. Gradually beat in 2 tablespoons of sugar. While beating constantly, add another egg white, then 2 tablespoons sugar. Continue this process until all egg whites are added. Mix remaining sugar with cream of tartar and gradually add to first mixture, beating constantly until very stiff. Add vanilla and nuts. Drop by teaspoonfuls onto cookie sheet lined with brown paper. Bake in a preheated slow oven at 300° for 25 minutes, or until cracked on top, but not browned. Put paper on damp surface and remove kisses with a sharp knife. About 4 1/2 dozen.