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,1698
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.