THE PROCEEDINGS is the official organ of the NATIONAL ACADEMY OF SCIENCES and of the NATIONAL RESEARCH COUNCIL, for the publication of brief accounts of important current researches of members of the ACADEMY and of the COUNCIL, and of other American investigators, and for reports on the meetings and other activities of the ACADEMY and of the COUNCIL. Publication in the Proceedings will supplement that in journals devoted to the special branches of science. The Proceedings will aim especially to secure prompt publication of original announcements of discoveries and wide circulation of the results of American research among investigators in other countries and in all branches of science. ARTICLES should be brief. The viewpoint should be comprehensive in giving the relation of the paper to previous publications of the author or of others and in exhibiting, where practicable, the significance of the work for other branches of science. Elaborate technical details of the work and long tables of data should be avoided, but authors should be precise in making clear the new results and should give some record of the methods and data upon which they are based. MANUSCRIPTS should be prepared with a current number of the Proceedings as a model in matters of form, and should be typewritten in duplicate with double spacing, the author retaining one copy. Illustrations should be confined to text-figures of simple character, though more elaborate illustrations may be allowed in special instances to authors willing to pay for their preparation and insertion. Particular attention should be given to arranging tabular matter in a simple and concise manner. REFERENCES to literature, numbered consecutively, will be placed at the end of the article and short footnotes should be avoided. It is suggested that references to periodicals be furnished in some detail and in general in accordance with the standard adopted for the Subject Catalogue of the International Catalogue of Scientific Literature, viz., name of author, with initials following (ordinarily omitting title of paper), abbreviated name of Journal, with place of publication, series (if any), volume, year, inclusive pages. For example: Montgomery, T. H., J. Morph., Boston, 22, 1911 (731-815); or, Wheeler, W. M., Königsburg, Schr. physik. Ges., 55, 1914 (1-142). PAPERS by members of the Academy may be sent to Edwin Bidwell Wilson, Managing Editor, Mass. Institute of Technology, Cambridge, Mass. Papers by non-members of the ACADEMY or COUNCIL should be submitted through some member. PROOF will not ordinarily be sent; if an author ask for proof, it will be sent with the understanding that charges for his corrections shall be billed to him. Authors are therefore requested to make final revisions on the typewritten manuscripts. The editors cannot undertake to do more than correct obvious minor errors. REPRINTS should be ordered at the time of submission of manuscript. They will be furnished to authors at cost, approximately as follows: SCHEDULE OF RATES FOR REPRINTS, CARRIAGE CHARGES EXTRA. Copyright, 1921, by the National Academy of Sciences |