QUESTIONS

Q : What is known of Alfred Sherlock, whose name Sir Arthur Conan Doyle borrowed for his famous detective? Alex Legge, Shrewsbury, Shropshire. Q : What is the origin of the @ symbol? Mrs G. Lewis, Skipton, N. Yorks. Q : What is the difference between ordinary, virgin and extra-virgin olive oil? Keith Melling, Basingstoke, Hants.