681. This can be still more clearly evident to man from the objects of his sight, to which his imagination or material idea answers in almost a similar degree. When one object which is supposed to be simple as seen by the eye, is seen through microscopes, the thousands of things of which it is composed appear therein. Thus a hundred tiny insects are comprised in but one ray of sight and appear as a single and obscure point, while to the artificial or optical sight not only a hundred living animalcules are disclosed, but also the viscera of each one.