Fictitious Problems in Mathematics

  title={Fictitious Problems in Mathematics},
  author={Edward John Routh},
YOUR reviewer gives a new definition of “a perfectly rough body” (NATURE, June 1), which he says is that of the mathematician. The definition appears to me to contradict what he has elsewhere said. But I need not enlarge on this point, for his criticism of a problem should be tried, not by his definition, but by that given in the book in which the problem occurs.