ine a well-greased 8 x 8 x 2-inch pan with blueberries.
Sprinkle with lemon juice.
Cream sugar and butter together; add milk alternately with flour, baking powder and salt, which have been sifted together.
Pour this batter evenly over blueberries.
Combine sugar and cornstarch.
Sprinkle over the top of the cake.
Pour boiling water over all and bake in a 375 F of 190 C oven for 1 hour. Serves 9.