16 BUREAU OF A.MERK'AX ETHNOLOGY [bull. 74 



5. The southern higher leA^el Floor B. 



6. The nortlieni higher level Floor B'. 



7. The floors beneath the Main Structure. 



Looking at the plan in cross-section another classification is neces- 

 sary : 



1. Highest Floors A, A'. 



2. Northern and southern higher level Floors B, B'. Floor C, the 

 higher of the two floors in Room II and the top of the stone stratum 

 to the east of the Eastern Terrace (pi. 2, sec. k-?) . 



3. Main Structure a^ ith Rooms I- VI and the Terraces. 



4. Northern and Southern Extensions. 



5. Floors under Rooms I, II, V, and VI. 



Description of plans and sections. — It is impossible to obtain an 

 adequate idea of the various constructions and of the explanations 

 in the text without consulting freely the plans and sections. 



Plan I (pi. 1) shows the walls and floors now standing. Walls 

 and pillars shown in solid black are still in place or are clearly indi- 

 cated by a break in the floor, with the characteristic upward slope 

 of the floor toward the walls. Dotted lines indicate the probable 

 extent of other walls. Rooms are indicated by Roman nitmerals 

 and the floors by capital letters. Various features to which atten- 

 tion is called are numbered. Floors still in place are shown in color. 



Section a-h runs north and south. ^ The depressed Floor H in 

 Rooms IX and X, although not appearing in the section, is indi- 

 cated by small dots. 



Section c-d also runs north and south. Here is indicated by small 

 dots the stone w^all at the southwestern corner of the Patio and the 

 floor level of Room I. 



Section e-f runs east and west. The contour of the hill is shown 

 in all three sections. 



Plan II (pi. 2) is an attempt to indicate the floors beneath the 

 level of those of Plan I. The various excavations made in order to 

 get beneath the surface of the main floors and as entrances to the 

 tunnels are indicated ])y Roman numerals (XIV-XXIX). Floors, 

 as in the previous plan, are given in capital letters. The various 

 tunnels are indicated by small letters. The walls of the tunnels 

 directly below Room I are shown by wavy lines. The two lowest tun- 

 nels are indicated by a zigzag line. The stratification of the various 

 cuts is shown in all cases Avhere it could be determined. 



Section g-h runs north and south, cutting the floor level C in 

 Room II. 



8 I am indebted to tho Engineer of the Office of the Inspection of Monuments for the 

 various heights of the floors. The plans here ofiCered were made by careful measurements 

 but were not surveyed with a transit. 



