A GREAT variety of affections is included under the term rheumatism. Among the public, and even in the profession, any painful condition is apt to be considered as rheumatic. In joint affections especially there is a wonderful vagueness about the use of the terms chronic rheumatism, rheumatoid arthritis, arthritis deformans, osteo-arthritis, and rheumatic gout. This is not to be wondered at, ho...