In conclusion,--What have science and art done for us? They have cultivated our minds--they have made us think, wonder, and admire, and I trust caused us to adore and reverence the Creator of this vast universe. They have taught us the knowledge and value of time, and have also shown the value of what man has been enabled to work out for his own benefit and that of the world at large. The chemist deals with the various substances brought under his notice, thereby acquiring a knowledge of their properties, enabling him to produce results which are truly beneficial. This knowledge is power. The painter makes the features of Nature his study, and by his brush delineates them on the canvas, and thus by knowledge of art he exhibits power. The astronomer's science is one of vast magnitude and importance--the study of it embracing both science and art: science in the various intricate calculations he requires to make in connection with the heavenly bodies. By his researches we have discovered the form of the earth and other planets, their respective distances from each other, their revolutions, their eclipses and their orbits, and, more wonderful still, the precise time when the various movements of each occur. In art, the astronomer has originated and perfected the many powerful and beautiful instruments now required for taking observations, and these, when compared with the instruments in use in bypast times, are excellent evidences of modern progress in this direction. Our wonder is excited when we look at the instruments formerly in use; that so much was done through them, and the advance made by art in the perfection of those now adopted, show us again that knowledge is power. The navigator, by a combination of astronomy and seamanship, is enabled to plough the great deep, and at all times by mathematical calculation to discover the exact position of his ship. What, however, would he be without the aid of art? The compass, the sextant, or quadrant, &c., are the means which enable him to attain these grand results, and to bring his ship to the desired haven. The use of these is knowledge, and this knowledge is power. Alike with all other things which science and art have called into use, knowledge is power, and this power was given by the Almighty, as I said at the beginning of this lecture, to enable man to fathom the works of creation. Let us then so live that we may ever admire the results of the labours of science and of art, and at the same time ever remember Him who has given us the power to discover and use them for our benefit,--thanking God, who first made all things and pronounced them very good, for His great mercy toward us. FOOTNOTES: [A] Now carried out. _A PENNY'S WORTH_; OR, "TAKE CARE OF THE PENCE, AND THE POUNDS WILL TAKE CARE OF THEMSELVES."