Books  Books 1  2 of 2 on But it is not immediately obvious when the middle term enters one of the premises.... 
But it is not immediately obvious when the middle term enters one of the premises universally. The following reasoning will serve for exercise in the preceding results. Since both premises are particular in form, the middle term can only enter one of... First notions of logic, preparatory to the study of geometry  Page 17 by Augustus De Morgan  1840  32 pages Full view 
