The Crudest Ideas

 "Sherlock Holmes had, in a very remarkable degree, the power of detaching his mind at will. For two hours the strange business in which we had been involved appeared to be forgotten, and he was entirely absorbed in the pictures of the modern Belgian masters. He would talk of nothing but art, of which he had the crudest ideas, from our leaving the gallery until we found ourselves at the Northumberland Hotel."

                                            -- The Hound of the Baskervilles

Jan Verhas  (9 January 1834 – 31 October 1896) was a Belgian painter of the Realist school. He wasknown for his portraits and genre paintings often depicting children of the Belgian bourgeoisie.

Sherlock Holmes's ideas about art are put to the test in The Strange Case of the Dutch Painter.