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 Rh, and of Prof. Ernest Röthlisberger, editor of the Droit d'Auteur, and one of the best authorities on international copyright. This acknowledgment of obligation is not to be taken as assuming for the work official sanction and authority, though so far as practicable, it reflects the opinions of the best authorities. The writer has also consulted freely — but it is hoped always within the limits of "fair use" — the best law-book writers, especially Drone, Copinger, Colles and Hardy, and MacGillivray, to whom acknowledgment is made in the several chapters. Acknowledgment is also made for the courtesies of Sir Frederick Macmillan, G. Herbert Thring, secretary of the British Society of Authors, and others numerous beyond naming. But most of all the writer is indebted to the intelligent and capable helpfulness of Carl L. Jellinghaus, who as private secretary, has been both right hand and eyes to the writer, and besides participating in the work of research, is largely responsible for the index and other "equipment" of the volume.

Copyright law is exceptionally confused and confusing, and even the new American and British codes are not without such defects. Specific subjects are so interdependent that it has been difficult to make clear lines of division among the several chapters, and there is necessarily repetition; it has been the endeavor to concentrate the main discussion in one place, designated in the index by black face figures, with subordinate references in other chapters. Ambiguities in the text of this volume often reflect ambiguities in the laws, particularly of foreign countries. Where acts, decisions, etc., are quoted in the text or given in the appendix, spelling, capitalization, punctuation, headings, etc., follow usually the respective forms, thus involving apparent inconsistencies. Side-headings in the appendix follow usually the official