Eugenics Laboratory Lectures 1: Pearson, Karl. 1907. The Scope and Importance to the State of the Science of National Eugenics (London: Frowde), 45 pp. Based on the Fourteenth Robert Boyle Lecture before the Oxford University Junior Scientific Club, 17 May 1907.
First edition is 1907 in Journal of the Oxford University Junior Scientific Club. Separately printed. (The edition printed in the Journal has not been located.)
Pearson republished this as Eugenics Laboratory Lectures number 1 (1909 is “second edition”; 1911 is “third edition”).