Here is the recipe (original), and it's not from a book; it's from a handwritten recipe I found in a collection of recipes and cookbooks from an estate auction. It is baked into the cake. My fault, it was 1 c, not a 1/2 cup, as previously asked.
1 3/4 c. sifted cake flour
2 tsp. baking powder
1 1/2 tsp. salt
1/2 c. shortening
1/3 c. granulated sugar
1 c. glassed syrup
2 eggs, well beaten
1/2 c. milk
1 tsp. grated lemon rind
1/2 tsp. lemon extract
Sift flour, baking powder and salt together. Cream shortening until soft, add sugar gradually. Then slowly blend in syrup. Add eggs in 4 portions, blending well after each addition. Add sifted dry ingredients alternately with milk, beating well after each. Stir in lemon rind and extract. Line 2 8" layer cake pans with wax paper. Grease side of pans and over wax paper. Pour in batter, and bake at 375° for 25-30 minutes. Cool in pans at least 10 minutes before removing.