The Museum of Science & Art (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. 1854. Excerpt: ... MARS. SKETCH OF THE OUTLINES OF CONTINENTS AND OCEANS, AND THE SNOW BEGION OF THE POLAR CIRCLE ON THE SOUTHERN HEMISPHERE OF TBS PLANET MARS, SROM THE OBSERVATIONS OF MADLER. THE PLANETS: ARE THEY INHABITED WORLDS? CHAPTER II..--Uses of an atmosphere--colour of sky.--2. Its effects on temperature.--3. Planetary atmospheres observable.--4. Clouds visible in them.--5. Hence rain, hail, and snow.--6. Winds manifested on the planets.--7. Clouds on Mercury, Venus, and Mars.--8. Continents and oceans.--9. Effect of gravity on planets.--10. Its relation to organised beings.--11. Adaptation of organised beings to the force of gravity.--12. Gravity on Mercury, Venus, and Mars.--13. Solar system--Planets.--14. Number of planets--groups 15. Inner group--the twenty-five grouped round the sun.--16. The outer group--Jupiter, Saturn, Uranus, and Neptune.--17. Their distances from the sun, from each other, and from the earth.--18. Apparent diameters of Sun's disk as seen from these planets--Sun's light and heat.--Museum No. 3. o 17 19. Question of habitability of these planets considered in reference to sun's light and heat.---20. Great comparative magnitude of these planets--Their volumes--Question of habitability continued.--21. Proportionate population, if inhabited.--22. Investigation of physical causes incompatible with their being habitable globes.--23. Application of such causes to Jupiter, and reasoning thereon--Necessity of organised world being different from that on the earth.--24. Comparative volume and density of the Earth and Jupiter.--25. Comparison of relative quantities of gravitating matter in Saturn, Uranus, and Neptune, and in the Earth--and of density.--26. Comparative weights of bodies placed upon such planets and on the Earth.--27. General results ...