Bulletin Volume 1 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1889 Excerpt: ...system, and perhaps hundreds of millions of years more will pass before sufficient heat will radiate from it to reduce its temperature sufficiently for a crust or shell to form on its outer surface. After that time comes, long eons of ages must elapse before vegetable or animal life can exist upon it. Thus we see Jupiter is still in its formative stage. Now let us take a look at our earth. Here is a planet that has had its birth, its youth, its advancement to adult life. It has been nebulous, it has been liquid with fiery heat, it has cooled till a crust formed on its outer surface: its vapor, condensing, fell upon it, forming the primeval ocean; its shell wrinkled and folded and dry land arose above the waters, and then plant and animal life appeared, and our habitable world was inhabited. This is our world today--its fauna and its flora established, from the equator well up to the poles. Moon We will now leave the other orbs and pass to a consideration and investigation of our satellite--the moon--and see how the laws we have been following, apply to that, our nearest neighbor. The moon is about 2100 miles in diameter, with a mean distance from the earth of 240,000 miles. It weighs about an eightieth as much as our earth, and has an area less than five times as great as the whole United States. It revolves around the earth in twenty-nine and one half days, and as a planetary year is the length of time it takes to circle around its principal, the lunar year is twenty-nine and one half of our days Stranger still, is the fact that the moon makes but one revolution on its axis while it revolves around the earth. Therefore its day is twenty-nine and one half of our days. Or in other words, one day is as a year and one year as a day--its days and years are equa...