We turn now to the Mosaic Record to see what light it throws upon and receives from this investigation. The first thing to be noticed is that the word used by Moses for the sun and moon is not the same as that employed to denote light. It properly signifies a light-holder, such as a candlestick, and harmonizes with the view that the sun in his original state was not luminous, but was made a luminary by the condensation of light previously existent under other conditions. In the next place, though the apparent dimensions of the sun and moon are the same, Moses correctly describes the one as "the great light," the other as "the little light," thus indicating a knowledge to which the astronomers of his day had probably not attained.

The relation between the accounts of the first and fourth day's work becomes clear if we assume that the sun was not made a luminary till the fourth day. The division of night and day depends upon two things, the rotation of the earth upon its axis, and the concentration of light in the sun. Hence when the rotation of the earth commenced that division was potentially provided for, but the provision would not take effect until the second condition was fulfilled by the concentration of light in the sun. The indications given by the coal measures point, as we have seen, to the same conclusion.

The only remaining question is "What was going on in the earth at the same time?" Our materials for answering this question are but scanty. So great an alteration in the sources of light and heat must have involved great physical changes on the earth's surface, and there is reason to believe that great mechanical forces were at work producing vast changes in the relations of land and water. "It has long been the opinion of the most eminent geologists that the coalfields of Lancashire and Yorkshire were once united, the upper coal measures and the overlying Millstone Grit and Toredale Bocks having been subsequently removed by denudation; but what is remarkable is the ancient date now assigned to this denudation, for it seems that a thickness of no less than 10,000 feet of the coal measures had been carried away before the deposition of even the lower Permian Rocks, which were thrown down upon the already disturbed truncated edges of the coal strata." [Footnote: Lyell, Geology for Students, p. 377.] And this is but a single instance.

During the interval between the deposition of the coal measures, which seem to belong to the third, and the Saurian remains which mark the fifth day, we have the Permian and Triassic Rocks, of which the Magnesian. Limestone and the new Red Sandstone are the most important representatives in England. Till a very recent period it was thought that these rocks belonged to a period remarkably destitute of animal life, very few fossils having been found in them. Recently, however, some very rich deposits have been found in the Tyrol, belonging to this period, but they are only local.

Of the Permian formation Sir C. Lyell says, "Not one of the species (of fossils) is common to rocks newer than the Palaeozoic." [Footnote: Geology for Students, p. 369.] This was not then a time for the origination of new forms of life. In the Trias, however, the new development of life, which was to attain its full dimensions on the fifth day, begins to open upon us. The earliest Saurian fossils are found, and the rocks still present us with impressions of the feet of reptiles and birds, which walked over the soft seashore, and left footprints, which were first dried and hardened by the sun and wind, and then filled up with fresh sand by the returning tide, but never entirely coalesced with the new material.

At the close of this period the first traces of mammalian life occur, in the shape of teeth, which are supposed to have belonged to some small Marsupial quadrupeds, and in America the whole lower jaws of three such animals have been discovered; but no other remains have as yet been traced.

The Trias then seems to mark the boundary between the fourth and fifth days. The fourth day seems to have been on the earth a period of great change, not only in physical conditions, but also in the forms of life. In the latter point of view, however, it seems to have been marked by the passing-away of old forms much more than by the origination of new ones, and hence the barrenness of the Geological Records is in exact accordance with the silence of the Mosaic Record as to any new developments.

SECTION 8. THE FIFTH DAY

"And God said. Let the waters swarm swarms, the soul of life, and let fowl fly above the earth in the face of the firmament of heaven.

"And God created the monsters, the great ones, and every soul of life that creepeth, with which the waters swarmed, after their kind, and every winged fowl after his kind; and God saw that it was good.