“This ought to give us a hint,” said he. “It will probably have belonged either to Weiss or Graves, as Mrs. Schallibaum apparently did not wear glasses. Let us see if we can find the remainder.”

We both groped carefully with our sticks amongst the rubbish, spreading it out on the hearth and removing the numerous pieces of crumpled paper. Our search was rewarded by the discovery of the second eyepiece of the spectacles, of which the glass was badly cracked but less shattered than the other. I also picked up two tiny sticks at which Thorndyke looked with deep interest before laying them on the mantelshelf.