Slide showing pedigree chart indicating various human skin complexions. Slide shows black and white pedigree chart of apparent human skin complexions including fair, rufus, dark, and red marked-freckling. Some life-dates and names of family are included on chart. Key below pedigree shows male & female symbols and '=very marked freckling (? Mild case of disease). *=Agnes also shows keratoses(?) but no "tumors".' Keratose is a growth on the skin which results from overproduction of the protein keratin. Title below image reads 'Fig. 1'. Late 19th - early 20th century