Rhubarb Pie

3 cups cut rhubarb (1 inch pieces)
1 cup sugar
3 tablespoons flour
Dash salt
1 recipe pastry
2 Tbl butter or Margarine
note: if adding strawberries to this pie increase the flour by 2 tablespoons

Combine ingredients and fill a 9 inch pastry lined pan.  Dot with butter and add top crust
Bake at 400 degrees 40 to 50 minutes.  Check crust after 30 minutes.  If suffiently brown cover with foil for remaining time