410 THE BEAUTIES OF NATURE ' CHAP, 
and in the course of ages a constantly in- 
creasing, part of the solid substance of the 
globe. 
THE STARS 
We have been dealing in the earlier part of 
this chapter with figures and distances so 
enormous that it is quite impossible for us to 
realise them ; and yet we have still others to 
consider compared with which even the solar 
system is insignificant. . 
In the first place, the number of the Stars is 
enormous. When we look at the sky at night 
they seem, indeed, almost innumerable; so 
that, like the sands of the sea, the Stars of 
heaven have ever been used as effective sym- 
bols of number. The total number visible to 
the naked eye is, however, in reality only 
about 3000, while that shown by the tele- 
scope is about 100,000,000. Photography, 
however, has revealed to us the existence 
of others which no telescope can show. We 
cannot by looking long at the heavens see 
more than at first; in fact, the first glance is 
the keenest. In photography, on the contrary, 
U r 
Nt Re sh J 
et o> 9 ee 
Bile — ad tae 
