more if there is any tail. But now observe this other measurement. The animal has been moving, and we have the length of its stride. In each case it is only about three inches. You have an indication, you see, of a long body with very short legs attached to it. It has not been considerate enough to leave any of its hair behind it. But its general shape must be what I have indicated, and it can run up a curtain, and it is carnivorous.”
“How do you deduce that?”
“Because it ran up the curtain. A canary’s cage was hanging in the window, and its aim seems to have been to get at the bird.”
“Then what was the beast?”
“Ah, if I could give it a name it might go a long way towards solving the case. On the whole, it was probably some creature of the weasel and stoat tribe—and yet it is larger than any of these that I have seen.”
“But what had it to do with the crime?”
“That, also, is still