But, if so, it was part of a pair of spectacles identical in properties with those worn by Mr.Weiss.
"The importance of this conclusion emerges when we consider the exceptional character of Mr.Weiss's spectacles.

They were not merely peculiar or remarkable; they were probably unique.

It is exceedingly likely that there is not in the entire world another similar pair of spectacles.

Whence the finding of these fragments of glass in the bedroom establishes a considerable probability that Mr.Weiss was, at some time, in the chambers at New Inn.
"And now let us gather up the threads of this part of the argument.

We are inquiring into the identity of the man Weiss.