[3.20] Romulus stood on the Palatine Hill, and Remus on the Aventine.
[3.21] dēcernō.
[3.22] ‘first.’
[4.1] ‘by virtue of the augury’; abl. of cause: H 475 (416): M 612: A 245: G 408: B 219.
[4.2] Ad . . . tūtēlam: ‘to guard the new city.’ Cf. [p. 3, n. 8].
[4.3] Render ‘its.’ Latin is fond of closely connecting successive clauses, and for this purpose often employs a relative pronoun, where English uses a simple demonstrative, or a demonstrative or personal pronoun with a conjunction,—generally and, often but or for: cf. [p. 2, n. 2].
[4.4] ‘in anger.’ An adjective may often be best rendered by an adverb or adverbial phrase.
[4.5] Sc. pereat (subjunctive of wish).
[4.6] H 477, I (421, I): M 646: A 249: G 407: B 218, 1.