Slide showing a table providing a 'summary of F2 results in inheritance of seed color in peas'. Slide shows a table II: a 'summary of F2 results in inheritance of seed color in peas (After Johannsen).' Row headings: 'investigator', 'yellow, per cent', 'green, per cent', 'total'. Column headings: 'investigator': 'Mendel, 1865', 'Correns, 1900', 'Tschermak, 1900', 'Hurst, 1904', 'Bateson, 1905', 'Lock, 1905', and 'Darbishire, 1909'. Also 'totals'. In the upper left corner of front pane there is a label titled 'Makers Newton and Co, 43 Museum Street, London WC1.' Late 19th to early 20th century