Here are more invisible fairies working every moment
around you, and you cannot even look out of the window without
seeing the work they are doing.
If, however, the day is cold and frosty, the water does not fall
in a shower of rain; it comes down in the shape of noiseless
snow. Go out after such a snow-shower, on a calm day, and look
at some of the flakes which have fallen; you will see, if you
choose good specimens, that they are not mere masses of frozen
water, but that each one is a beautiful six-pointed crystal star.
How have these crystals been built up? What power has been at
work arranging their delicate forms? In the fourth lecture we
shall see that up in the clouds another of our invisible fairies,
which, for want of a better name, we call the "force of
crystallization," has caught hold of the tiny particles of water
before "cohesion" had made them into round drops, and there
silently but rapidly, has moulded them into those delicate
crystal starts know as "snowflakes".
Pages:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25