Bere eee eee ne nee RN ee ale RE ah itae Phe the 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 behalf of the Commission: A. Makes any warranty or representation, expressed or implied, with respect to the accuracy, completeness, or usefulness of the information contained in this report, or that the use of any information, apparatus, method, or procese disclosed in this report may not infringe ~ privately owned rights; or B. Assumes any liabilities with reapect to the use of, or for damages resulting from the use of any information, apparatus, method, or process disclosed in this report. As used in the above, ‘‘person acting on behalf of the Commiasion’”’ includes any employee 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. This report has been reproduced directly from the best available copy. Printed in USA. Price $3.00. Available from the Clearing- house for Federal Scientific and Technical Information, National Bureau of Standards, U. S. Department of Commerce, Springfield, Virginia 22151. pag tie USAET Dts of fechnicel informeten Extennan, Ooh Ridge, Tennasens