The Frenchman de La Place (1827) first promulgated in modern terminology the theory once held by Greek philosophers, that the earth and the system in which it is a member originated from a primitive cosmic-vapor or universal fire-mist filling all space with infinitely small atoms. In this homogeneous mass _motion_ originated, resulting in a concentration at one point. This condensation resulted in heat and light. The planetary system at first consisted of a huge gas-ball which gradually cooled, contracting into a molten mass which under the influence of centrifugal force began to rotate. This rotation became more rapid as the mass condensed, throwing off the planets, in which the process was repeated (the moons being cast off), until the earth became sufficiently cool to sustain life. The Origin of Life. When asked about the origin of life on earth, the evolutionists generally reply that this is not a question for science but for philosophy to answer. However, the question comes with such insistent force that the biologist finds himself constrained to offer some explanation of the origin of the simplest plant and animal life after the globe had, according to the hypothesis, sufficiently cooled to present areas in which life might arise. Necessarily, the assumption must be that life was generated out of lifeless matter. Huxley says: "If the hypothesis of evolution be true, living matter must have arisen from not-living matter, for by the hypothesis, the condition of the globe was at one time such that living matter could not have existed on it, life being entirely incompatible with a gaseous state." (The earth having been a ball of gases at the time.) Tyndall is a little more specific; he says that the combination of electrical and chemical forces acting on the primal ooze caused germs of life to originate in small bubble-like forms, (vesicles). His words are: "The first step in the creation of life upon this planet was a chemico-electric operation by which simple germinal vesicles were produced." The vesicles consisted of protoplasm, the simple substance (white-of-egg) which exists in the cells of animal and vegetable tissues, and which is composed of oxygen, carbon, hydrogen, nitrogen and traces of other elements. From this original protoplasm the great variety of living things has been developed. The Bearing of Evolution on Christianity.