Blueberry Pound Cake

1 cup + 2 Tablespoons butter or margarine, divided
2 1/4 cups sugar,divided
4 eggs
1 teaspoon vanilla extract
3 cups All Purpose flour, divided
1 teaspoon baking powder
1/2  teaspoon salt
2 cups fresh blueberries

Grease a 10 inch tube pan with 2 Tablespoons butter.  Sprinkle pan with  1/4 cup sugar; set aside. Cream remaining 1 cup butter; gradually add remaining 2 cups sugar, beaten well.  Add eggs,
one at a time, beating well after each addition.  Add vanilla; mix well.  Combine 2 & 3/4  cups flour, baking powder and salt; gradually add to creamed mixture, beating until well blended.  Dredge blueberries with remaining 1/4 cup flour; stir to coat well.  Fold blueberries into batter.  Pour batter into preparred pan.  Bake  at 325 F. for 1 hour and 10 min. or untill cake tests done.  Cool in pan 10 min.; remove cake from pan and let cool completely.