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of the stars in the epicycles and eccentrics to be irregular with regard to the centres of these circles, "which was absurd." The lecturer next alludes to the beauty of the celestial phenomena, and shows that we must distinguish between the casual contemplation of the heavens and their scientific examination, as only the latter will detect the variation in the moon's distance from us, the revolutions of the planets, &c. The utility of astronomy is easy to perceive, as no nation could exist without means of properly dividing and fixing time, while the science exalts the human mind from earthly and trivial things to heavenly ones. A special use of astronomy is, that it enables us to draw conclusions from the movements in the celestial regions as to human fate. The remainder of the lecture is devoted to considerations on the importance and value of astrology, and tries to answer the objections which philosophers and theologians had made against it. It is evident, from the detailed manner in which this is done, how important Tycho considered this subject to be. We cannot, he says, deny the influence of the stars without disbelieving in the wisdom of God. The importance of the sun and moon is easy to perceive, but the five planets and the eighth sphere have also their destination, as they cannot have been created without a purpose, but were placed in the sky and given regular motions to show the wisdom and goodness of the Creator. The sun causes the four seasons, while during the increase and decrease of the moon all things which are analogous to it, such as the brain and marrow of animals, increase and decrease similarly. The moon also causes the tides, and its influence on these becomes greatest when that of the sun is joined to it at new-moon and full-moon. Sailors and cultivators of the soil have noticed that the rising and setting of certain stars cause stormy weather, and more experienced observers know that the