Anxious to put beyond a doubt, either the forgery or the authenticity of these writings, numerous authors have exercised their ingenuity and talents, in a most minute and laborious examination, not only of their leading features, but of every line, and almost of every word. It would seem, however, not to be necessary, in so far as the great interests of truth are concerned, to descend to such microscopic investigation, and tedious verbal criticism, as have extended pages into volumes, and rendered confused and tiresome, disquisitions which might otherwise have been simple and interesting. If Mary's innocence is to be established, it must not be by the discovery of petty inconsistencies, or trifling inaccuracies. If her guilt is to be proved, the impartial reader is not to be satisfied with vague suspicions or ingenious suggestions, but must have a body of evidence set before him, which, if it does not amount to actual demonstration, contains a circumstantial strength equally calculated to convince. It may be observed, at the outset, that unless the conclusions, to which these writings would lead, be corroborated by the established facts of History, it cannot be expected that a great deal of weight will be attached to them. Besides, it must not be forgotten, that as the originals have been lost, it is by means of translations alone that their alleged contents are known to the world. Upon their authority, Mary is accused of having first committed adultery, and then murder. Whatever opinion may have been formed of her from her behaviour during the rest of her existence,--however gentle her dispositions may have appeared,--however strong her sense of the distinction between right and wrong,--however constant her religious principles,--however wise her government,--however excellent the culture of her mind,--if the letters are to be credited, the whole was either hypocrisy from beginning to end, or, (overcome by some sudden impulse,) a year of gross criminality was introduced into the very middle of a well spent life. If she made so rapid a descent into a career of vice, she as rapidly rose again; and reassuming the character she had laid aside, lived and died with the purity of a saint, and the fortitude of a martyr. It cannot therefore be upon slight grounds that evidence so fatal to her reputation is to be admitted; and there will be little necessity to engage in minute cavilling, or to enter upon points of minor importance, if, by a distinct statement of some of the leading arguments against its authenticity, the whole shall be made to appear nugatory, improbable, and unentitled to credit. The evidences naturally divide themselves into the two heads of _external_ and _internal_; and, without further preface, it will be best to consider these in succession.