To me they are most instructive.

The pieces of reed offered an extremely valuable suggestion, and the spectacles enabled me to test that suggestion and turn it into actual information." "Unfortunately," said I, "the pieces of reed convey nothing to me.

I don't know what they are or of what they have formed a part." "I think," he replied, "that if you examine them with due consideration, you will find their use pretty obvious.

Have a good look at them and the spectacles too.

Think over all that you know of that mysterious group of people who lived in that house, and see if you cannot form some coherent theory of their actions.