« AnteriorContinuar »
S. To divide the Periphery of a Circle into 360 De-
(j. Objections answered.
3. The Method of the Arabians.
6. Snellius. - _ •
7. the first Terrestrial Method.
8. The second.
9. The third.
10. The Circumference of the Earth % it's Diameter, Surface, and Solid Content, in linear, square, and cubic Miles.
11. The Errors and Defects of the several preceding Methods of measuring the Earth.
12. The Measure of the Parallels of the Earth.
Of the Motion of the Earth. Page 64.
1. The Motion of the Earth the Cause of the Celestiai Appearances, upon the Copernican Hypothesis.
2. A double Motion, besides the third, which is rather an Inclination of the Earth's Axis.
3. The Arguments for proving these Motions.
4. Objections answered.
5. The Velocity of. this Motion in different Parts of the Earth.
Of the Earth's Place in the System of the World.
1. Common Opinion places the Earth in the Centre of the World.
2. The Situation of the Earth, and the Order of the Planets.
3. The Situation of the Earth upon the Copernican Hypothesis.
4. The Distance the Earth from the Planets.
5. The Distance of the Earth from the fixed Stars.
2 CHAP. CHAP. VII.
Of the Substance, internal Structure, and Comp osition of the Earth. Page 87
1. To explain of what Substances the Earth is composed.
2. The Earth divided into a consistent and fluid Part, and the Atmosphere; or into Earthy Water; and Air.
3. How the Earth and Water hold together; and constitute one Globe.
4. The Surface of the Earth continued, but mt the Surface of the Waters.
5. How the Parts of the Earth are, from the Sur~ face to the Center, is uncertain.
6. That Earth has it's Consistency and Coherence from * Salt.
7. Different kinds of Earth variousty mixed in the
8. The Situation and Disposition os the Parts of the Earth different at different Times.
Of the Division of the Parts of the Earth into integrant Parts of the Sea. Page 103
1. Part of the Earth covered with Water, and Part not.
2. The dry Parts separated from each other by the Waters between.
3. Four great Continents enumerated.
4. Ten great Islands enumerated.
5. Ten moderate Islands enumerated.
6. Ten small Islands enumerated.
7. The smallest Islands enumerated.
8. The Peninsulas, Isthmuses, and Capes, or HeadLands. • * ■ ■ • * •
9. Fourteen 9. Fourteen Peninsula's enumerated.
10. Tbe more remarkable Jstmujfes enumerated.
C H A P. IX.
Of Mountains in general, and the Ways of taking their Altitude. Page 119
1. Tbe Parts of tbe Earth are of different Al■ titudes.
2. To find tbe Height of a Mountain by Altimetry.
3. The Height of a Mountain being given, to find it's Distance from a certain Place.
4. The Distance being given from whence the Top of a Mountain is first seen j to find it's Height.
5. The Height of a Mountain being known, to find tbe utmost Distance whereto it may le seen.
6. The Sun's Height above the Horizon being given at any Time, and the Length of the Shadow of the Mountain at that Time, to find the Height of tbe Mountain.
7 . The Height of Mountains bears no sensible Proportion to the Semidiameter of tbe Earth, or does not hinder tbe Sphericity of the Globe.
8. To explain the Origin of Mountains.
9. Why Rains and watery Meteors are frequent on tbe Tops of Mountains, whilst it is fair below.
10. Whether the Surface of a Mountain be more capacious than tbe Plain it stands on.
Of the Differences of Mountains. Page 1^5
1. Some Mountains are large, others small.
2. Tbe more famous Mountains enumerated.