than the yellow.[44] From experiments it is found, that those rays of light are of the largest quantity that paint the brightest colors; and of all these, the red rays have the least refrangibility. Without light vegetables would have no color, but would appear white; this has been remarkably illustrated by Professor Robison. Some bodies absorb one colored ray, others another, while they reflect the rest. This is the cause of color in bodies. A red body, for instance, reflects the red rays and absorbs the rest. A white body reflects all the rays, and absorbs none; while a black body, on the contrary, absorbs all the rays, and reflects none:[45] this shows, that black colored apparel is very improper during the heat of summer, or in tropical climates. [There is one difficulty scarcely mentioned, and surely not accounted for, in the preceding chapter: i.e. _How are we to reconcile the creation of light on the first day, and the creation of the sun not until the fourth?_ This has been a standing proposition since the revival of learning. There can be no doubt but the account of the creation, arrangement and nature of the world, as given by Moses, is correct; and would so appear to the most philosophically scientific, could we ascertain certainly the meaning of the sacred historian, and did we understand perfectly the phenomena of nature. It is reasonable to suppose that the discoveries in natural philosophy would tend to influence the explanations of Moses’ account. This is the fact. These discoveries have produced two theories in regard to light: The _vibratory_, or Cartesian; and the _corpuscular_, or Newtonian. The Newtonian theory supposes the sun to be the original and principal source of light; and that light is emitted from the sun’s surface in inconceivably small _corpuscles_, in such rapid succession, and in straight lines, as to seem a continuous ray, though, in reality, the particles are a thousand miles apart in their approach to the earth. This is the most popular of modern theories, and the only one, as I recollect, employed by commentators in illustrating the account of Moses; or rather in solving the difficulty by reconciling this theory with his account.