Of all the advancements made in Science of late years, perhaps the most pre-eminent and the most important to mankind, stands that in the science of Chemistry. Our Chemists have proved themselves the greatest of all revolutionists, for they have silently and scientifically undermined all the dogmas of the priest, upon which the customs and the manners of society seem hitherto to have been entirely founded. Every species of matter has been brought to dissolution, and its elementary properties investigated, by their crucibles and fires, or their galvanic batteries, and we have been practically and scientifically shewn in what manner Nature performs her dissolutions and regenerations. As far as I understand, but one of the phenomena of nature remains unexplored, and that is the properties of the electric fluid, or the real cause of the solar light and heat. I do not despair of this being reached, and I have the stronger hope, as it will lead at once to a knowledge of the cause of our existence, and that of every animal and vegetable substance. It will shew the cause and process by which inert matter becomes organized, and how all the variegated beauties of nature start into life. However, at present, we know quite enough to authorize the rejection of all our priestly cosmogonies, we know quite enough to set at nought the notion that the planetary system of the universe has existed but six thousand years--we know that matter is imperishable and indestructible, for, although, a fire to a common understanding seems to destroy combustible matter, yet such is not the case, for after any combustible substance has passed through the fiercest fire, the whole of its component parts still exist to their former full extent; the fire has only separated them and changed their relative situations; they are dispersed in their gaseous state, and again ready for the operations of nature, to amalgamate with some new living and growing substance, to which their qualities can be assimilated.* * The latter part of this sentence might appear preposterous when addressed to the Chemist, or to the Man of Science, but it is probable that this Address might be read by some individual who might not comprehend the assertion that matter is imperishable and indestructible; therefore the writer has taken the liberty to introduce this slight explanation. He confesses that but two years since he startled himself at the assertion, and asked the assertor whether fire did not destroy matter. We know that the planetary system of the universe has existed to all eternity as to the past, and must exist to all eternity as to the future. For, although, that solar system of which our habitation is a part, or other solar systems, might go through great changes, yet its effect is but as the falling of a hair from our heads, and cannot be said to disturb the great whole.