J. BOSLER, astronomer at the Observatory of Meudon, France, has been doing some very careful figuring of late, in regard to the energy in light and heat given off by the sun, and the consequent using up of that body. According to his figures, in thirty millions of years the sun would lose a mass of matter equal to this earth; and as the sun loses its mass, it loses its power to attract, and consequently there must come a time, according to his theory, when something will happen to the orbit of our planet. We should learn to distinguish between science and speculation. Scientific men have discovered a great deal of scientific truth within the last century in particular, and much of it is a blessing to the world. But it is easy to form the habit of taking for granted that everything is true which is said by a man who has acquired the reputation of a great scientist. Sometimes these scientific men come out with great theories in regard to the earth cooling off and the fire of the sun going out, and sometimes these stories have quite a serious effect upon some nervous people. But to the individual who knows and believes the word of God, there come to mind such assuring words as these: "Lift up your eyes on high, and behold who hath created these things, that bring out their host by number: He calleth them all by names by the greatness of His might, for that He is strong in power; not one faileth." Isa. 40:26. This text invites us to look up and see the great suns that dot the infinite expanse of space, and we are to remember that because the divine Creator is strong in power, not one of them will fail. Infinite power has created our sun to go on forever, and it will be shining in even greater strength in thirty million times thirty million years from now than it is to-day. For the same prophet, Isaiah, when speaking of conditions in the redeemed state, said that— "the light of the moon shall be as the light of the sun, and the light of the sun shall be sevenfold, as the light of seven days, in the day that the Lord bindeth up the breach of His people, and healeth the stroke of their wound." Isa. 30:26. It is perfectly safe to trust God's word; but when the scientist speculates, the chances are strong, if we follow him, in favor of his misleading us.