same terms. Also if the affirmative premise is partly false, but the negative wholly true, for nothing prevents A being present with a certain B, but not present with the whole of C, and B being present with no C, as animal is with something white, but with no pitch, and whiteness with no pitch. Hence if A is assumed present with the whole of B, but with no C, A B is partly false, but A C wholly true, also the conclusion will be true. Also if both propositions are partly false, the conclusion will be true, since A may concur with a cer-
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