Ir may be a humiliating, but it is an unquestionable fact, that the growth and development of the human intelligence are extraordinarily slow. If we may trust to the evidence which has been so abundantly amassed for the last twenty years by various cognate sciences, and especially by the new science of Prehistoric Archæology, man must be supposed to have wandered for many centuries over the surface of the earth in a condition which seems at first sight but little elevated above that of the beasts which perish, -in a condition, at any rate, as thoroughly degraded as that of the squalid Fuegian, or the hideous Mincopie. Navigators have told us about savages who were ignorant of the use of fire, and who looked upon the boiling water of a kettle as an animal which bit. Savages still exist, who, separated by thousands of years from the very epoch in which