Terminology of the Lathe

Quick, now:  What are the two most fundamental measurements of the capacity of a metalworking lathe?

If you said “swing over bed,” and “distance between centers,” without having to look it up, you may not be in need of this excellent introduction to the lathe by Frank Hoose, Jr. For the rest of us, it should make a very handy reference, right down to the cool animated power-feed turning operation.