Dissolve the jelly in the 1/4 pint hot water and add the grated rind and juice of the lemons. Set aside until the jelly begins to thicken. Separate the yolks and whites of the eggs. Whisk the yolks with the sugar until light in colour. Add the jelly mixture and mix well. Wisk the egg whites until they are thick and stand in peaks When the egg and jelly mixture begins to set, fold in the egg whites. Pour into a glass serving dish and stand aside to set.