Margaret, I'm trying to help you in your recipe search. I do not have that cookbook, but have searched on-line and found a recipe for you. Hope it helps you out.

Brown Oatmeal Soda Bread

2 1/4-2 1/2 cups unbleached flour
2 teaspoons baking soda
1 teaspoon baking powder
2 teaspoons salt
2 cups wheat flour
1 cup oat, plus additional for top of loaves and baking stone
2 cups buttermilk
1 large egg

In a large bowl mix 2 1/4 cup of the flour with the rest of the dry ingredients. Form a well in the center.

In another bowl (or large measuring cup) whisk together the egg and milk. Pour milk mixture into the dry ingredients and fold until JUST combined. Turn out onto floured surface and knead the other 1/4 cup of flour into the bread being careful not to overwork the dough. Cut dough in half. Form into 2 round loaves. Cut a cross into the top of each loaf. Dust with flour and sprinkle with additional oats.

Sprinkle baking sheets with oats to prevent sticking and bake loaves at 350 for 30-35 minutes.