20 



NATURAL THEOLOGY. 



than liglit and lieat are now received from the 

 sun/ 



6 This cut reprcf^ents the four great planets, as seen through 

 telescopes of considerable powers. Each planet is niaikcd by 

 the .symbol which astronomers have for ages been accustcmed to 

 use. ^ is Saturn with his two rings; which are huge bodies, the 

 larger having a diameter more than 25 times that of our earth, or 

 above 200,000 miles, and li^oving with prodigious swiftness round 

 the planet. The seven satellites, or moons, are not represented. 

 If is Jupiter with his spots or belts ; his four moons are not repre- 

 sented. Both Saturn and Jupiter are, like our earth, flattened at 

 the poles, instead of being perfect spheres, owing to their rotatory 

 motion on their axes. ^ is Mars, with his singularly-formed 

 spots, and reddish light at his poles. ? is two figures of Venus, 



