28. How may we detect 'Fallacious Premisses'?

29. How may we detect a 'Fallacious Conclusion'?

30. Sometimes the Conclusion, offered to us, is not identical with
the correct Conclusion, and yet cannot be fairly called 'Fallacious'.
When does this happen? And what name may we give to such a
Conclusion?

[See pp. 57-59]




2. Half of Smaller Diagram.


Propositions to be represented.


-----------
| | |
| x |
| | |
--y-----y'-

__________

1. Some x are not-y.