Inspiration is concerned with teaching _religious_ truths, and such facts or occurrences as are connected immediately with illustrating, or with impressing them on the mind." Thus far Dr. Stuart and Mr. Penn,--men whose evidence on this special head must be sufficient to show that it is not merely geologists who have recognized an _optical_ or _visual_ character in the Mosaic history of creation. And certainly the inference deduced from the admitted _fact_, that is, the inference that the optical description must have been founded on a revelation addressed to the eye,--a revelation by vision,--does seem a fair and legitimate one. The revelation must have been either a revelation in words or ideas, or a revelation of scenes and events pictorially exhibited. Failing, however, to record its own history, it leaves the student equally at liberty, so far as _external_ evidence is concerned, to take up either view; while, so far as _internal_ evidence goes, the presumption seems all in favor of revelation by vision; for, while no reason can be assigned why, in a revelation by word or idea, appearances which took place ere there existed a human eye should be _optically_ described, nothing can be more natural or obvious than that they should be so described, had they been revealed by vision as a piece of _eye-witnessing_. It seems, then, at least eminently probable that such was the mode or form of the revelation in this case, and that he who saw by vision on the Mount the pattern of the Tabernacle and its sacred furniture, and in the Wilderness of Horeb the bush burning but not consumed,--types and symbols of the coming dispensation and of its Divine Author,--saw also by vision the _pattern_ of those successive pre-Adamic creations, animal and vegetable, through which our world was fitted up as a place of human habitation. The _reason_ why the drama of creation has been _optically_ described seems to be, that it was in reality _visionally_ revealed.