The refuge is deep: the Spider disappears in it entirely, all but her rounded hind-quarters, which bar the entrance to her donjon.
With her front half plunged into the back of her hut, the Epeira certainly cannot see her web.

Even if she had good sight, instead of being purblind, her position could not possibly allow her to keep the prey in view.

Does she give up hunting during this period of bright sunlight?
Not at all.

Look again.
Wonderful! One of her hind-legs is stretched outside the leafy cabin; and the signalling-thread ends just at the tip of that leg.

Whoso has not seen the Epeira in this attitude, with her hand, so to speak, on the telegraph-receiver, knows nothing of one of the most curious instances of animal cleverness.