AS AN AID TO THE STUDENT, THE DATE OF WRITING OR OF FIRST PUBLICATION OF EACH SELECTION IS INDICATED IN CONNECTION WITH THE SOURCE REFERENCE. WHERE ARTICLES HAVE BEEN DRAWN FROM PUBLISHED VOLUMES, THE DATE OF PUBLICATION APPEARS PRECEDING THE REFERENCE. IN THE CASE OF THE MATTER DRAWN FROM THE PERIODICAL ARTICLES AND THE MANUSCRIPT FILES, THE YEAR OF WRITING OR OF FIRST PUBLICATION FORMS A PART OF THE SOURCE REFERENCE.

IN A NUMBER OF INSTANCES THE ARTICLES DRAWN FROM LATER BOOKS, SUCH AS "COUNSELS ON HEALTH," APPEARED FIRST IN WORKS NOW OUT OF PRINT. THE REFERENCE TO THE CURRENT WORK IS GIVEN, BUT THE INFORMATION AS TO THE FIRST PUBLICATION OF THE ARTICLE IS NOTED IN PARENTHESES IN CONNECTION WITH THE SOURCE REFERENCE.

COMPILERS.