APPENDIX

CONTAINING THE COMPARATIVE POPULATION OF THE DIFFERENT QUARTERS OF OUR GLOBE.

[The numbers are given in Table III.]

§ 36. The Five principal parts of our globe, America, Europe, Asia, Africa and Australia are not equally thickly settled. Europe and Asia have, in proportion to their extent, the greatest population; America and Australia the least.—The following Plate, No. XV, shows the comparative population of these continents.

Fig. I represents the whole surface of land on our globe, inhabited by nearly One Thousand Millions (One Billion) human beings. If these were to live throughout as close together as in Europe, then they would only occupy a surface of land as large in proportion, as the inner circle marked a. But the two rings, b and c, occupy each as much surface as the circle a; hence there is yet room for twice as many human beings; before each quarter of the world is as thickly settled as Europe.

Fig. II represents Asia and its population. If this quarter were settled as thickly as Europe is, then its inhabitants would only fill the inner circle marked b; the ring a, therefore, is still left for settlement.

Fig. III exhibits the population of Africa. If the inhabitants of this continent lived as close together as those of Europe, they would only fill the inner circle, marked c, and the surrounding ring might yet be inhabited.

Fig. IV shows the comparative population of America. Its inhabitants, crowded together as the inhabitants of Europe, would only occupy the small circle e; the whole broad ring f, therefore, is still left for settlement!!

Fig. V represents Australia. Its inhabitants, settled as in Europe, would only fill the circle a.

Fig. VI represents the population of Europe filling the whole of that Quarter.

The whole of these Six figures may represent to the pupil the comparative extents of the five great continents of our globe; but the inner circles of these figures, and the whole of the sixth figure, show their comparative populations. From a close inspection of this plate the pupil may learn:

1. That the population of Asia is yet greater than that of all the rest of the world. (The circle b in figure II being yet larger than the inner circles of all the other figures, and figure VI taken together.)

2. That the population of Europe is as yet larger than that of America, Africa and Australia, taken together.

3. That the population of Africa is larger than the joint populations of America and Australia.

4. That America if once settled as Europe is, will have more than Six times her population.

[The teacher, if he think proper to ask the pupils some questions in reference to the Appendix, will find no difficulty in adapting them to the capacity of his pupils.]

TABLE I.

Showing the Diameter, Surface, and Cubic Contents of the Sun and the Planets.

Names.Diameter in Geographical Miles.Surface in Geographical Square Miles.Cubic Contents in Geographical Cubic Miles.
Sun,194,000118,093,000,0003,825,903,253,970,000
Mercury,6081,161,314117,659,099
Venus,16788,844,0632,473,469,743
Earth,17199,282,0662,659,159,061
Mars,10063,178,805532,996,317
Vesta,7415,0002,121,347
Juno,309282,6902,355,750
Ceres,352389,18222,832,034
Pallas,465650,26652,886,472
Jupiter,195661,202,280,40623,533,143,597,631
Saturn,17263936,530,6202,757,547,946,775
Herschel,7564173,696,9111,359,227,438,858
Moon,480723,68651,561,578

TABLE II.

Showing the exact Duration of the Revolutions of the different Planets round the Sun.

Planets.Years.Days.Hours.Min.Sec.Duration of the Moon’s revolution round the Earth.
Mercury,—8723154427 days, 7 hours, 43 minutes, and 12 seconds.
Venus,—224164910
Earth,1—698
Mars,1321221831
Vesta,3225———
Juno,41311030—
Ceres,4220134—
Pallas,42211535—
Jupiter,113142039—
Saturn,291662——
Herschel,832669——

TABLE III.

Showing the Extent and Population of the five great Continents.

Names of the Continents.Extent in Sq. Miles.Population.
America,14,868,00040,000,000
Europe,3,292,000198,000,000
Asia,15,000,000500,000,000
Africa,11,267,900150,000,000
Australia,3,823,2001,500,000
The United States,1,781,92613,000,000

POPULAR
LESSONS IN ASTRONOMY,
ON A NEW PLAN;
IN WHICH
SOME OF THE LEADING PRINCIPLES OF THE SCIENCE ARE ILLUSTRATED
BY ACTUAL COMPARISONS, INDEPENDENT OF THE
USE OF NUMBERS.

BY FRANCIS J. GRUND,
AUTHOR OF “AN ELEMENTARY TREATISE ON PLANE AND SOLID GEOMETRY,” “ELEMENTS OF NATURAL PHILOSOPHY AND CHEMISTRY,” &c. &c.

BOSTON:
CARTER, HENDEE, AND CO.
1833.