1. Spalled-sandstone slabs of wall width laid in 

 abundant quantities of mud and often protected 

 from the elements by closely placed stone chips. 



2. Rubble veneered with casual blocks of friable 

 sandstone dressed on the face only and chinked all 

 around with chips of laminate sandstone. 



3. Rubble veneered with matched blocks, either of 

 laminate or dressed friable sandstone or both, alter- 

 nating with bands of inch-thick tablets of laminated 

 sandstone. 



4. Rubble veneered with laminate sandstone of 

 fairly uniform thickness laid with a minimum of 

 mud plaster between. 



10.— IIk- four principal types of masonry at Pueblo Bonito, each represented by a 

 2-foot square section. 



