Through watching so much at night, when it changes so, I have finally
found out.
The front pattern does move—and no wonder! The woman behind shakes it!
Sometimes I think there are a great many women behind, and sometimes
only one, and she crawls around fast, and her crawling shakes it all
over.
Then in the very bright spots she keeps still, and in the very shady
spots she just takes hold of the bars and shakes them hard.
And she is all the time trying to climb through. But nobody could climb
through that pattern—it strangles so; I think that is why it has so
many heads.
They get through, and then the pattern strangles them off and turns
them upside-down, and makes their eyes white!
If those heads were covered or taken off it would not be half so bad.