HARVARD COLLEGE COPYRIGHT, 1896, BY CHARLES SCRIBNER'S SONS TROW DIRECTORY TABLE OF CONTENTS PAGE The question.-The two theories of man's origin.-The argument purely historical.-Means of tracing man's ancestry and history.-Classification. PROTOZOA TO WORMS: CELLS, TISSUES, AND ORGANS. 32 Amoeba: Its anatomy and physiology.-Development of the cell.- Hydra: The development of digestive and reproductive organs, and of WORMS TO VERTEBRATES: SKELETON AND HEAD. 55 Worms and the development of organs.-Mollusks: The external protec- tive skeleton leads to degeneration or stagnation.—Annelids and arthro- pods: The external locomotive skeleton leads to temporary rapid advance, but fails of the goal.—Its disadvantages.-Vertebrates: The internal loco- motive skeleton leads to backbone and brain.-Reasons for their dominance VERTEBRATES: BACKBONE AND BRAIN The advance of vertebrates from fish through amphibia and reptiles to mammals. The development of skeleton, appendages, circulatory and PAGE 81 Mode of investigation.- Intellect. - Sense-perceptions.-Association.— 113 NATURAL SELECTION AND ENVIRONMENT The reversal of the sequence of functions leads to extermination, degen- eration, or, rarely, to stagnation.-Natural selection becomes more un- sparing as we go higher.-Extinction.-Severity of the struggle for life.— Environment one.—But lower animals come into vital relation with but a small part of it.-It consists of a myriad of forces, which, as acting on a given form, may be considered as one grand resultant.-Environment is thus a power making at first for digestion and reproduction, then for mus- cular strength and activity, then for shrewdness, finally for unselfishness and righteousness.-An ultimate "power, not ourselves, making for right- eousness," a personality.—Our knowledge of this personality may be valid, even though very incomplete.-Religion.-Conformity to the spiritual in or behind environment is likeness to God.-The conservative tendency in Human environment.-The development of the family as the school of man's training.-The family as the school of unselfishness and obedience. Composed of atoms and molecules, hence subject to chemical and physi- cal laws.-As a living being.-As an animal.-As a vertebrate.-As a mammal.—As a social being.—As a personal and moral being.-The con- flict between the higher and the lower in man.-As a religious being.-As hero. He has not yet attained.-Future man. He will utilize all his powers, duly subordinating the lower to the higher.-The triumph of the Subject of the Bible.-Man: Body, intellect, heart.-God: Law, sin, The struggle for existence.-Natural selection.-Correlation of organs.- - |
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