8-4: se los: cf. note se la, p. 4, 6.
8-5: ¡A la paz de Dios!: (a familiar formula of leavetaking) God be with you, good-by, etc.
8-6: No habría andado: he could not have gone. The conditional mood is often employed to express conjecture as to a (usually) past event, just as the future indicative is used to express conjecture about a (usually) present event.
8-7: volver pies atrás: retrace his steps.
9-1: estupefacto: words having originally an initial s followed by a consonant prefix an e on becoming Spanish, as: estupor, stupor; escuela, school.