Take four eggs, and separate the whites from the yolks. Beat the
whites by themselves, to a stiff froth; then add gradually the
yolks, and beat them both together for a long time. Next add by
degrees half a pound of the finest loaf-sugar, powdered and
sifted, beating it in very hard; and eight drops of strong essence
of lemon. Lastly, stir in a quarter of a pound of sifted flour, a
little at a time. Stir the whole very hard, and then with a spoon
lay it on sheets of white paper, forming it into thin cakes of an
oblong or oval shape. Take care not to place them too close to
each other, lest they run. Grate loaf-sugar over the top of each,
to assist in keeping them in shape. Have the oven quite ready to
put them in immediately. It should be rather brisk. They will bake
in a few minutes, and should be but slightly coloured.