Waitz in his note suggests that instead of [Greek: te/taktai] we ought to read [Greek: teta/chthô]. But if we suppose that the formal table once existed in the text, in an order of arrangement agreeing with the Analytica, this conjectural change would be unnecessary. Waitz has made some changes in the text of this chapter, which appear to me partly for the better, partly not for the better. Both Bekker and Bussemaker (Firmin Didot) retain the old text; but this old text was a puzzle to the ancient commentators, even anterior to Alexander of Aphrodisias. I will here give first the text of Bekker, next the changes made by Waitz: my own opinion does not wholly coincide with either. I shall cite the text from p. 19, b. 19, leaving out the portion between lines 30 and 36, which does not bear upon the matter here discussed, while it obscures the legitimate sequence of Aristotle's reasoning. (Bekker.)--[Greek: O(/tan de\ to\ _e)/sti_ tri/ton proskatêgorê=tai, ê)/dê dichô=s le/gontai ai( a)ntithe/seis. le/gô de\ oi(=on _e)/sti di/kaios a)/nthrôpos_; to\ _e)/sti_ tri/ton phêmi\ sugkei=sthai o)/noma ê)\ r(ê=ma e)n tê=| katapha/sei. ô(/ste dia\ tou=to te/ttara e)/stai tau=ta, ô(=n ta\ me\n du/o pro\s tê\n kata/phasin kai\ a)po/phasin e(/xei kata\ to\ stoichou=n ô(s ai( sterê/seis, ta\ de\ du/o, ou)/. le/gô d' o(/ti to\ _e)/stin_ ê)\ _tô=| dikai/ô| proskei/setai_ ê)\ tô=| _ou) dikai/ô|_] (25), [Greek: ô(/ste kai\ ê( a)po/phasis. te/ttara ou)=n e)/stai.] (Here follow the first pairs of Antitheses, or the first Quaternion of propositions in the order as given)-- (A) [Greek: e)/sti di/kios a)/nthrôpos] ... ... (B) [Greek: ou)k e)/sti di/kios a)/nthrôpos.]y (C) [Greek: e)/stin ou) di/kaios a)/nthrôpos] ... (D) [Greek: ou)k e)/stin ou) di/kaios a)/nthrôpos.] [Greek: to\ ga\r _e)/stin_ e)ntau=tha kai\ to\ _ou)k e)/sti tô=| dikai/ô| proskei/setai kai\ tô=| ou) dikai/ô|]_ (30).--[Greek: Au(=tai me\n ou)=n du/o a)nti/keintai, a)/llai de\ du/o pro\s to\ ou)k _a)/nthrôpos_ ô(s u(pokei/meno/n ti] (38) [Greek: _prostethe/n_.] (Here follow the second pairs of Antitheses, or the second Quaternion of propositions, again in the order from which I have departed above)-- (E) [Greek: e)/sti di/kaios ou)k a)/nthrôpos] ... ... (F) [Greek: Ou)k e)/sti di/kaios ou)k a)/nthrôpos.] (G) [Greek: e)/stin ou) di/kaios ou)k a)/nthrôpos] ... (H) [Greek: Ou)k e)/stin ou) di/kaios ou)k a)/nthrôpos.] [Greek: plei/ous de\ tou/tôn ou)k e)/sontai a)ntithe/seis. au(=tai de\] (the second Quaternion) [Greek: chôri\s e)kei/nôn] (first Quaternion) [Greek: au)tai\ kath' e(auta\s e)/sontai, ô(s o)no/mati tô=| _ou)k a)/nthrôpos_ chrô/menai.] In this text Waitz makes three alterations:--1. In line 24, instead of [Greek: ê)\ tô=| dikai/ô| proskei/setai ê)\ tô=| ou) dikai/ô|]--he reads, [Greek: ê)\ tô=| a)nthrô/pô| proskei/setai ê)\ tô=| ou)k a)nthrô/pô|].