LEGAL NOTICE This report was prepared as an account of Government sponsored work. Neither the United States, nor the Commission, nor any person acting on behalfofthe Commission: A. Makes any warranty or representation, expressed or implied, with respect to the accuracy, completeness, or usefulness of the information containedin this report, or that the use of any information, apparatus, method, or process disclosed in this report maynotinfringe privately owned rights; or B. Assumes anyliabilities with respect to the use of, or for damages resulting from the use of any information, apparatus, method, or process disclosedin this report. As used in the above, “‘person acting on behalf of the Commission”includes any em- ployee or contractor of the Commission, or employee of such contractor, to the extent that such employee or contractor of the Commission, or employee of such contractor prepares, disseminates, or provides access to, any information pursuant to his employmentor contract with the Commission, or his employment with such contractor. PRINTED IN USA PRICE $5.00 Available from the Clearinghouse for Federal Scientific and Technical Information National! Bureau of Standards U.S. Department of Commerce Springfield, Virginia May 1965 5066160 1450 copies