Esperanto in Scotland, Chapter 4, Exercise 2
Sample answer.

Two reasons for caution:
1. They are the Federation's own figures, and a body reporting on its own success has a
   reason to make it look strong.
2. "Affiliated clubs" and "members" can be counted in different ways (paid members versus
   people on a mailing list; clubs that met regularly versus clubs on paper).

One test: compare with another source, such as individual club reports or lists of
delegates at the 1911 congress, and see whether the totals agree.