Copy letter from Sir Michael Foster, to Professor Karl Pearson, Fellow of the Royal Society States the title of his paper 'On the 'Mathematical Contributions to the Theory of Evolution. IX. On the Principle of Homotyposis and Its Relation to Heredity, to the Variability of the Individual, and to that of the Race. Part I. Homotypos in the Vegetable Kingdom' [presumably concerning publication]. 7 March 1901