Orange-Raisin Muffins

2 cups sifted flour
3/4 tsp. soda
1/2 tsp. salt
1/4 cup sugar
1/2 cup raisin
1 tsp. grated orange rind
1 egg, beaten
3/4 cup buttermilk
1/4 cup orange juice
1/4 cup melted shortening

Sift together flour, soda, salt and sugar. Stir in raisins and orange rind. Combine egg, buttermilk, orange juice and shortening. Add to flour mixture, stirring only until flour is moistened. Fill greased muffin pans 2/3 full. Bake at 425 degrees for about 20 minutes.