It is not my business, nor my intention, to criticize the remarkable work of Chalmers to which I have so often referred. But I may say, that the arguments there employed by him, so far as they go upon astronomical or philosophical grounds, are of great weight; and upon the whole, such as we may both assent to, as scientifically true, and accept as rationally persuasive. I think, however, that there are other arguments, also drawn from scientific discoveries, which bear, in a very important and striking manner, upon the opinions in question; and which Chalmers has not referred to: and I conceive that there are philosophical views of another kind, which, for those who desire, and who will venture, to regard the Universe and its Creator, in the wider and deeper relations which appear to be open to human speculation, may be a source of satisfaction. When certain positive propositions, maintained as true, while they are really highly doubtful, have given rise to difficulties in the minds of religious persons; other positive propositions, combating these, propounded and supported by argument, that they may be accepted according to their evidence, may, at any rate, have force enough to break down and dissipate such loosely founded difficulties. To present to the reader's mind such speculations as I have thus indicated, is the object of the following pages. They can, of course, pretend to no charm, except for persons who are willing to have their minds occupied with such difficulties and such speculations as I have referred to.