observations were correct he had certainly made a most important
discovery.
But unfortunately he had let it escape. He had been too excited, and
besides the beetle's pattern of flight was confusing. It flew away, and
then as if to say "Catch me!" it turned and waited. When he
approached it cautiously it flew away again,
turned around, and
waited. Mercilessly tantalizing, its course had at last led it to a clump of
grass into which it disappeared.
The man was completely captivated by the beetle with the yellowish
front legs.
When he had observed the sandy soil, it seemed to him that his guess
was correct. Actually, the beetle family
is representative of desert
insects. According to one theory, their strange pattern of flight is a snare
for the purpose of enticing small animals away from their nests. Prey
such as mice and lizards are lured out in spite of themselves, wander
into the desert, and collapse from hunger and fatigue. Their bodies then
become the beetles' food. These beetles
have the elegant Japanese
name of "letter-bearer" and present graceful features, but actually they
have sharp jaws and are ferocious and cannibalistic by nature. But
whether or not his theory was correct, the man was unquestionably
beguiled by the mysterious pattern of the beetle's flight.
And his interest in sand, which was the condition for the beetle's
existence, could not help but grow. He began to read everything he
could about it. And as his research progressed
he realized that sand
was a very interesting substance. For example, opening to the article on
sand in the encyclopedia, he found the following:
SAND: an aggregate of rock fragments. Sometimes including loadstone,
tinstone, and more rarely gold dust. Diameter: 2 to 1/16 mm.
A very clear definition indeed. In short, then, sand came from
fragmented rock and was intermediate between clay and pebbles. But
simply calling it an intermediate substance
did not provide a really
satisfactory explanation. Why was it that isolated deserts and sandy
terrain came into existence through the sifting out of only the sand from
soil in which clay, sand, and stones were thoroughly mixed together? If
a true intermediate substance were involved, the erosive action of wind
and water would necessarily produce any number of intermingling
intermediate forms in the range between rock and clay. However, there
are in fact only three forms that can be clearly
distinguished from one
another: stones, sand, and clay. Furthermore, sand is sand wherever it
is; strangely enough, there is almost no difference in the size of the
grains whether they come from the Gobi Desert or from the beach at
Eno-shima. The size of the grains shows very little variation and follows
a Gaussian distribution curve with a true mean of 1/8 mm.
One commentary gave a very simple explanation
of the decomposition
of land through the erosive action of wind and water: the lighter
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