6; since _S,_ undistributed in the convertend, would be distributed in the converse.

If we are told that _Some men are not cooks_, we cannot infer that _Some cooks are not men_.
This would be to assume that '_Some men_' are identical with '_All men_.' By quantifying the predicate, indeed, we may convert O.simply, thus: _Some men are not cooks_ .'.

_No cooks are some men._ And the same plan has some advantage in converting A.; for by the usual method _per accidens_, the converse of A.being I., if we convert this again it is still I., and therefore means less than our original convertend.

Thus: _All S is P .'.

Some P is S .'.