Department of Orthodontics, University of Iowa, Iowa City, Iowa.

Presented at the 96th Annual Meeting of the American Public Health Association, Dental Health Section, Detroit, Michigan, November 13, 1968. From the Division of Dental Health, National Institutes of Health, Bethesda, Maryland and San Francisco, California.

From the Department of Orthodontics, Eastman Dental Center, Rochester, New York. Research reported in this study was supported by Grant DE 01837 from the National Institute of Dental Research, National Institute of Health, United States Public Health Service.

Read at the Eighteenth Biennial meeting of the Angle Society, Denver, Colorado, November, 1969.

*This investigation was supported in part by Public Health Service Research Career Development Award 1 KO4 DE39921-01 from the National Institute of Dental Research to the junior author.

*Presented at a Workshop on Research Related to Malocclusion, conducted by the Oral-Facial Growth and Development Program, the National Institute of Dental Research in Bethesda, Maryland on November 17, 1969.

From the Institute of Reconstructive Plastic Surgery, New York University Medical Center, New York, N.Y.

Thesis presented for partial requirement for a Master's degree, The Ohio State University, 1968.

Read at the biennial meeting of the Angle Society, Denver, November, 1969.

From the National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20014.