"Contractarianism Gone Wild: Carruthers and the Moral Status of Animals," Between the Species , Vol. 10, Nos. 1-2
 (Winter/Spring 1994), pp. 39-48 (for abstract, click here).

 Argues against Carruthers's attempt to use a kind of Rawlsian contractarianism to justify our having direct moral duties to all
 humans and only minimal indirect duties to animals.