The script reads from left to right, like our own writing, and unlike that of the Semitic peoples and the primitive Greeks; and the rule for the placing of the characters is that all the ‘wedges’ point to the right or downwards and the arrowhead forms are open towards the right. But if you look at this photograph you will see that all the wedges point upwards to the left and that the arrowhead characters are open towards the left. Obviously the photograph is upside down.”

“But,” I exclaimed, “this is really most mysterious. What do you suppose can be the explanation?”

“I think,” replied Thorndyke, “that we may perhaps get a suggestion from the back of the frame. Let us see.”