What, did you not observe it? I think there can be no doubt of
it. Address printed in rather straggling characters: 'Miss S.
Cushing, Cross Street, Croydon.' Done with a broad-pointed pen,
probably a J, and with very inferior ink. The word 'Croydon' has
been originally spelled with an 'i', which has been changed to
'y'. The parcel was directed, then, by a man--the printing is
distinctly masculine--of limited education and unacquainted with
the town of Croydon. So far, so good! The box is a yellow,
half-pound honeydew box, with nothing distinctive save two thumb
marks at the left bottom corner. It is filled with rough salt of
the quality used for preserving hides and other of the coarser
commercial purposes. And embedded in it are these very singular
enclosures."

He took out the two ears as he spoke, and laying a board across
his knee he examined them minutely, while Lestrade and I, bending
forward on each side of him, glanced alternately at these
dreadful relics and at the thoughtful, eager face of our
companion. Finally he returned them to the box once more and sat
for a while in deep meditation.

"You have observed, of course," said he at last, "that the ears
are not a pair."

"Yes, I have noticed that. But if this were the practical joke
of some students from the dissecting-rooms, it would be as easy
for them to send two odd ears as a pair."

"Precisely. But this is not a practical joke."