Sociology conceives itself as a natural science elucidating a factual sequence.
Before he had begun to learn Greek, Marsilio entered upon the task of studying and elucidating Plato.
Neither by geometrical, nor physical, nor metaphysical principles had he succeeded in reaching and grasping the infinite and the spiritual, or in elucidating their relation to man and man's organism, though he had caught glimpses of facts and methods which he thought only required confirmation and development.
The discovery of the yeast-conidia of these fungi, and their thorough investigation by Brefeld, have thrown new lights on the group, as also have the results elucidating the nature of the ordinary dark spores - smuts, bunt, &c. - which by their mode of origin and development are chlamydospores.
Ritual known as The Book of the Dead, dating back fifteen centuries B.C., and accompanied with numerous scenes painted in brilliant colours, proves how ancient was this very natural method of elucidating a written text by means of pictures.