OUR HERO MAKES TWO PROMISES. We doubt if there is anywhere on the sea board of England another stretch of coast so wild and rugged, and so forbidding of aspect to navigators, as is that of Headlandshire-probably so called because of its numerous bold headlands overlooking the Irish Sea. Not far from midway of this stretch of coast is an inlet of the sea, called Raven Bay; and from this bay there is still another inlet, narrow and dubious of entrance,...