Blueberry Pie

3/4 cup sugar
1/4 cup all-purpose flour
3 1/2 tablespoons cornstarch
1/8 teaspoon salt
4 1/2 cups blueberries
1 pastry for double-crust pie

Preheat oven to 400°F.
Combine sugar, flour, cornstarch and salt; toss with blueberries.
Line 9-inch pie plate with pastry.
Add blackberry mixture.
Adjust top crust; cut slits to allow steam to escape.
Bake for 40 to 45 minutes.