THE FOUNDATION OF EUGENICS. 8i

giving. He will, 'I trust, treat it much as an annexe to his adjacent biometric laboratory, for many studies in Eugenics might, with equal propriety, be carried on in either of them, and the same methods of precise analysis which are due to the mathematical skill and untiring energy of Professor Pearson are used in both. The Office now bears the name of the Eugenics Laboratory, and its temporary home is in 88 Gower Street. (It is now, 1909, housed in the University buildings.) The phrase ' National Eugenics' is defined as ' the study of agencies under social control that may improve or impair the racial qualities of future generations, either physically or mentally.'

The Laboratory has already begun to publish memoirs on its own account, and I now rest satisfied in the belief that, with a fair share of good luck, this young Institution will prosper and grow into an important centre of research.

APPLICATION OF THEORIES OF PROBABILITY
TO EUGENICS.

Eugenics seeks for quantitative results. It is not contented with such vague words as ' much' or ' little,' but endeavours to determine ' how much' or ' how little' in precise and trustworthy figures. A simple example will show the importance of this. Let us suppose a class of persons, called A, who are afflicted with some form and some specified

G