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 it came from the leading article, is really one of the most remarkable things which I have ever known. How did you do it?”

“I presume, Doctor, that you could tell the skull of a negro from that of an Esquimaux?”

“Most certainly.”

“But how?”

“Because that is my special hobby. The differences are obvious. The supra-orbital crest, the facial angle, the maxillary curve, the”

“But this is my special hobby, and the differences are equally obvious. There is as much difference to my eyes between the leaded bourgeois type of a Times article and the slovenly print of an evening halfpenny paper as there could be between your negro and your Esquimaux. The detection of types is one of the most elementary branches of knowledge to the special expert in crime, though I confess that once when I was very young I confused the Leeds Mercury with the Western Morning News. But a Times