QUESTIONS

Q : What is the origin of corned beef? How is it made?

Jim Proudman, Leeds.

Q : Has any U.S. president visited all 50 states?

Philip Brannon, London SE25.

Q : In the early Seventies, I was in an old government building which had lifts powered by water pressure; the operator pulled on a rope inside the lift to move it or brake. Does anyone know anything of this system?

David Simmons, Wells, Somerset.