ABSTRACT
M Y inquiries into hereditary genius, of which I shall speak in a later chapter, were suffi ciently advanced before the year 1865 to show the pressing necessity of obtaining a multitude of exact measurements relating to every measurable faculty of body or mind, for two generations at least, on which to theorise. I therefore set myself to work in many directions towards achieving this object, in some cases for immediate use, in others to bear fruit hereafter.
