The question seems a reasonable one to ask, To what authority shall we look for knowledge and interpretation of these spiritual truths which are not accessible by scientific study? How shall we know that they are truths at all? I am aware that here the testimony of Christian conscientiousness is sometimes held to be the court of last resort, which I interpret to mean that if one intuitively reaches the conclusion that something is true it is true, the most positive evidence to the contrary notwithstanding. Certainly, no other fact is better established in all human history than the truth of witchcraft, if we admit the potency of this authority. If we reject this, must we not then fall back upon ecclesiastical infallibility as the final interpreter of truth? And this the essayist, in his paper, declines to argue. Now, can there be any such thing as scientific investigation within such prescribed limitations? Or scientific study of the Bible itself which excludes from its province the so-called spiritual revelations which it contains? One might naturally think that the primary purpose of all the critical study of the books, authors, and structure of the Bible was to learn just what these distinct truths it teaches are. But what bearing can this study have upon the question, being but an intellectual process with which the essential truths are disconnected, which only come by revelation? Higher criticism can not hold permanently such an untenable position. It must either go backward to an infallible book, or an infallible interpretation of it by authority, or it must go forward to the consideration of the Bible as a collection of books of ancient literature, to be examined without restrictions. The truths which it contains are to be ascertained by "apprehending intellectually" and "reasoning logically," in the same manner as with other books written by religious leaders in ancient times. Any halting between these two positions is only for temporary rest. No permanent foothold can ever be gained on such a foundation of quicksand. An impassable dead line in biblical study is indicative of the theological and not the scientific method. LEWIS DAYTON BURDICK. MCDONOUGH, N. Y. A CORRECTION. _Editor Popular Science Monthly_: SIR: A correspondent, Mr. C. Wood Davis, of Peotone, Kansas, appears to think it his duty to prove that we can not produce wheat enough in this country to meet our own future demands, and apparently regards it as a personal matter when any one contests this position. He also thinks he has found a small error in long division in the last article which you printed from me on this question which I can not find, but which if found and corrected would have no influence on the general argument.