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. Makesany warrantyor 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 may notinfringe privately ownedrights; or B. Assumes any liabilities with respect to the use of, or for damagesresulting 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 Commission”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 employment or contract with the Commission, or his employment with such contractor. PRINTED IN USA PRICE $1.25 Available from the Office of Technical Services, Department of Commerce Washington 25, D.C. May 1959 1200 copies