Parry discusses an extension of Aristotle's syllogistic that uses four nontraditional quantifiers. We show that his conjectured decision procedure for validity for the extended syllogistic is correct even if syllogisms have more than two premises. And we axiomatize this extension of the syllogistic.
"Parry Syllogisms." Notre Dame J. Formal Logic 40 (3) 414 - 419, Summer 1999. https://doi.org/10.1305/ndjfl/1022615619