Thus: 60 sheep in 100 are horned; 60 sheep in 100 are blackfaced: .'.

at least 20 blackfaced sheep in 100 are horned.
But such an argument, though it may be correct Arithmetic, is not Logic at all; and when such numerical evidence is obtainable the comparatively indefinite arguments of Logic are needless.

Another apparent exception is the following: Most men are 5 feet high; Most men are semi-rational: .'.

Some semi-rational things are 5 feet high.
Here the Middle Term (men) is distributed in neither premise, yet the indisputable conclusion is a logical proposition.

The premises, however, are really arithmetical; for 'most' means 'more than half,' or more than 50 per cent.
Still, another apparent exception is entirely logical.