An attempt will be made in the following pages to bring forward additional evidence of the rudeness of the early condition of mankind, of the gradual evolution of their mental and moral powers through experience, and of their protracted struggle with opposing obstacles while winning their way to civilization. It will be drawn, in part, from the great sequence of inventions and discoveries which stretches along the entire pathway of human progress; but chiefly from domestic institutions, which express the growth of certain ideas and passions. As we re-ascend along the several lines of progress toward the primitive ages of mankind, and eliminate one after the other, in the order in which they appeared, inventions and discoveries on the one hand, and institutions on the other, we are enabled to perceive that the former stand to each other in progressive, and the latter in unfolding relations. While the former class have had a connection, more or less direct, the latter have been developed from a few primary germs of thought. Modern institutions plant their roots in the period of barbarism, into which their germs were transmitted from the previous period of savagery. They have had a lineal descent through the ages, with the streams of the blood, as well as a logical development. Two independent lines of investigation thus invite our attention. The one leads through inventions and discoveries, and the other through primary institutions. With the knowledge gained therefrom, we may hope to indicate the principal stages of human development. The proofs to be adduced will be drawn chiefly from domestic institutions; the references to achievements more strictly intellectual being general as well as subordinate. The facts indicate the gradual formation and subsequent development of certain ideas, passions, and aspirations. Those which hold the most prominent positions may be generalized as growths of the particular ideas with which they severally stand connected. Apart from inventions and discoveries they are the following: I. _Subsistence_, II. _Government_, III. _Language_, IV. _The Family_, V. _Religion_, VI. _House Life and Architecture_, VII. _Property_. _First._ Subsistence has been increased and perfected by a series of successive arts, introduced at long intervals of time, and connected more or less directly with inventions and discoveries. _Second._ The germ of government must be sought in the organization into gentes in the Status of savagery; and followed down, through the advancing forms of this institution, to the establishment of political society.