_Head of the Saviour._--Can any of your readers give me some information
about an engraving of our Saviour, which may just now be seen in many of
the London print-shops? It represents the side-face, and is said to be a
fac-simile of a likeness engraved on an emerald by order of some Roman
Emperor, and which served as the ransom of some other famous person (who, I
quite forget). Is this really the truth?