8 CONTENTS 



Detailed description — Continued. P^^ge 



Sondiern Extension 31 



Room IX, P^loors H, K, F 31 



Rooms VII, VIII 32 



Room XI, Floor E 32 



Northern Extension 33 



Floor M 33 



Room XIII, Floors N, O 33 



Higher level floors___ 33 



Floor B 33 



Floor B' 33 



Floor C 34 



Floor on east 34 



Lowest floors 34 



Floors in Tunnels n~p 35 



Floor P 35 



Floor R 35 



Floor Q 36 



Niches in Tunnels c, /) 36 



Sequence 37 



Period I 38 



Floors in Tunnels n~p 38 



Floors Q, R, P 38 



Wells 38 



Period II 38 



Main Structure 38 



Refuse ash pits XV, XVI, XXIV 38 



Period III 38 



Southern Extension 38 



Floor F 38 



Period IV 38 



Additions to Terraces on all four sides 38 



Period V 39 



Northern Extension 39 



Floors M-0 39 



Room XIII 39 



Floors J, y 39 



Period VI 39 



Floors B, C, B' and that on east 39 



Period VII 40 



Wall over Floor M 40 



Floor E 40 



Period VIII 40 



Floor A over Patio 40 



Period IX 40 



Floor A' 41 



Artifacts 41 



Skeletal remains 41 



Stone objects 42 



Shell objects 42 



Human figurines 42 



Archaic type 42 



Toltec type ^ 42 



Coyotlatelco type 42 



Aztec type 43 



