PREFACE. BEING Somewhat at variance with precedent, the tone and mode of treatment occasionally adopted in the following pages will, perhaps, provoke criticism. Whether, in thus innovating upon established usage, the writer has acted judiciously or otherwise, the event must determine. He has not, however, transgressed without adequate motive; having done so under the belief that, as it is the purpose of a book to influence conduct, the best way of writing a book must be the way best fitted to effect this purpose. Should exception be taken to the manifestations of feeling now and then met with, as out of place in a treatise having so scientific a title; it is replied that, in their present phase of progress, men are but little swayed by purely intellectual considerations-that to be operative, these must be enforced by direct or implied appeals to the sentiments-and that, provided such appeals are not in place of, but merely supplementary to, the deductions of logic, no well-grounded objection can be made to them. The reader will find that the several conclusions submitted to him are primarily based on entirely impersonal reasoning, by which alone they may be judged; and if, for the sake of commending these conclusions to the |